[{"id":156279,"question":"Electrolysis is the study of conduction of\r\nelectricity through:","choices":[{"text":"Solids","value":"A"},{"text":"Liquids","value":"B"},{"text":"Gases","value":"C"},{"text":"Plasma","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":156278,"question":"

Two dissimilar metals\r\njoined at their ends kept at constant temperature constitute:

","choices":[{"text":"

Cell

","value":"A"},{"text":"

Voltmeter

","value":"B"},{"text":"

Thermocouple

","value":"C"},{"text":"

Potentiometer

","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":3},{"id":156277,"question":"

The magnitude of\r\nchemical Effects depends upon:

","choices":[{"text":"

Nature of liquid

","value":"A"},{"text":"

Quantity of Electricity\r\npassed through the liquid

","value":"B"},{"text":"

Color of the liquid

","value":"C"},{"text":"

Both (A) and (C)

","value":"D"},{"text":"

Both\r\n(A) and (B)

","value":"E"}],"correctAnswer":5},{"id":156276,"question":"Magnetic effect of current is used:","choices":[{"text":"

In electric motor

","value":"A"},{"text":"

To detect current

","value":"B"},{"text":"

To measure current

","value":"C"},{"text":"

All\r\nof these

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":4},{"id":156275,"question":"The\r\nstrength of magnetic field at certain points around a wire depends upon:","choices":[{"text":"

Value of current\r\npassing

","value":"A"},{"text":"

Distance from the\r\ncurrent element

","value":"B"},{"text":"

Color of the material

","value":"C"},{"text":"

Both\r\n(A) and (B)

","value":"D"},{"text":"

Both (B) and (C)

","value":"E"}],"correctAnswer":4},{"id":156274,"question":"The passage of current is accompanied by a\r\nmagnetic field in the surrounding space:","choices":[{"text":"

Always\r\naccompanied

","value":"A"},{"text":"

Sometimes accompanied

","value":"B"},{"text":"

Never accompanied

","value":"C"},{"text":"Any of above

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":1},{"id":156273,"question":"The passage of current is accompanied by a\r\nmagnetic field in the surrounding space:","choices":[{"text":"

Always\r\naccompanied

","value":"A"},{"text":"

Sometimes accompanied

","value":"B"},{"text":"

Never accompanied

","value":"C"},{"text":"Any of above

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":1},{"id":156272,"question":"

Heating effect of\r\ncurrent utilized in:

","choices":[{"text":"

Electric motor

","value":"A"},{"text":"

Electric toaster

","value":"B"},{"text":"

Electroplating

","value":"C"},{"text":"

Electric kettle

","value":"D"},{"text":"

Both\r\n(B) and (D)

","value":"E"}],"correctAnswer":5},{"id":156271,"question":"As the current flow through the wire:","choices":[{"text":"

It\r\ngenerates heat in the wire

","value":"A"},{"text":"

It produces sound in\r\nthe wire

","value":"B"},{"text":"

Resistance of the wire\r\ndecreases

","value":"C"},{"text":"

Voltage across the ends\r\nis increased

","value":"D"},{"text":"None of these","value":"E"}],"correctAnswer":1},{"id":156270,"question":"

The obvious effect/s of\r\ncurrent is/are:

","choices":[{"text":"

Heating effect

","value":"A"},{"text":"

Magnetic effect

","value":"B"},{"text":"

Chemical effect

","value":"C"},{"text":"

Both (C) and (B)

","value":"D"},{"text":"

All\r\nof these

","value":"E"}],"correctAnswer":5},{"id":156269,"question":"

When two spherical\r\nconducting balls at different potentials are joined by metallic wire, the\r\ncurrent starts:

","choices":[{"text":"

Decreasing from zero to\r\nmaximum

","value":"A"},{"text":"

Increasing from zero to\r\nmaximum

","value":"B"},{"text":"

Decreasing\r\nfrom maximum to zero

","value":"C"},{"text":"

Increasing from maximum\r\nto zero

","value":"D"},{"text":"Both (A) and (D)

","value":"E"}],"correctAnswer":3},{"id":156268,"question":"

The device which can\r\nconvert heat energy into electrical energy is called:

","choices":[{"text":"

Thermistor

","value":"A"},{"text":"

Thermometer

","value":"B"},{"text":"

Thermostat

","value":"C"},{"text":"

Thermocouple

","value":"D"},{"text":"

Both (C) and (D)

","value":"E"}],"correctAnswer":4},{"id":156267,"question":"

Conversion of chemical\r\nenergy to electrical energy can be achieved by:

","choices":[{"text":"

Primary cell

","value":"A"},{"text":"

Secondary cell

","value":"B"},{"text":"

Both\r\n(A) and (B)

","value":"C"},{"text":"

Photovoltaic cell

","value":"D"},{"text":"

Solar cell

","value":"E"}],"correctAnswer":3},{"id":156266,"question":"

The example/s of\r\nnon-electrical energy to electrical is/are:

","choices":[{"text":"

Chemical energy

","value":"A"},{"text":"

Mechanical energy

","value":"B"},{"text":"

Heat energy

","value":"C"},{"text":"

Both (A) and (B)

","value":"D"},{"text":"

All\r\nof these

","value":"E"}],"correctAnswer":5},{"id":156265,"question":"

When two spherical\r\nconducting balls at different potentials are joined by a metallic wire, after\r\nsome time:

","choices":[{"text":"

Both the conductors are\r\nat the same potential

","value":"A"},{"text":"

Potential difference\r\nacross the conductors remain constant

","value":"B"},{"text":"

Potential difference\r\nacross the conductors becomes zero

","value":"C"},{"text":"

Both (A) and (B)

","value":"D"},{"text":"

Both\r\n(A) and (C)

","value":"E"}],"correctAnswer":5},{"id":156264,"question":"

When two spherical\r\nconducting balls at different potentials are joined by a metallic wire, after\r\nsome time:

","choices":[{"text":"

Both the conductors are\r\nat the same potential

","value":"A"},{"text":"

Potential difference\r\nacross the conductors remain constant

","value":"B"},{"text":"

Potential difference\r\nacross the conductors becomes zero

","value":"C"},{"text":"

Both (A) and (B)

","value":"D"},{"text":"

Both\r\n(A) and (C)

","value":"E"}],"correctAnswer":5},{"id":156263,"question":"

In order to have a\r\nconstant current through wire, the potential difference across its end should:

","choices":[{"text":"

Be zero

","value":"A"},{"text":"

Be\r\nmaintained constant

","value":"B"},{"text":"

Goes on increasing

","value":"C"},{"text":"

Go on decreasing

","value":"D"},{"text":"

Both (A) and (B)

","value":"E"}],"correctAnswer":2},{"id":156262,"question":"An electric field is generated along the wire\r\nwhen:","choices":[{"text":"

Its resistance is very\r\nhigh

","value":"A"},{"text":"

A constant potential is\r\nmaintained across the wire

","value":"B"},{"text":"

Net current through the\r\nwire is zero

","value":"C"},{"text":"

A\r\nconstant potential difference is maintained across the wire

","value":"D"},{"text":"

Either (A) or (D)

","value":"E"}],"correctAnswer":4},{"id":156261,"question":"

The effects of bends in\r\na wire on its electrical resistance are:

","choices":[{"text":"

Zero

","value":"A"},{"text":"

Much larger

","value":"B"},{"text":"

Larger

","value":"C"},{"text":"

Smaller

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":1},{"id":156260,"question":"When resistance of a current carrying wire\r\nincreases due to rise in temperature, the drift velocity of electrons:","choices":[{"text":"

Decreases

","value":"A"},{"text":"

Increases

","value":"B"},{"text":"

Remains the constant

","value":"C"},{"text":"

Either of these

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":1},{"id":156259,"question":"When a constant potential difference is applied\r\nacross the conductor, the drift velocity of electrons:","choices":[{"text":"

Increases

","value":"A"},{"text":"

Decreases

","value":"B"},{"text":"

Remains\r\nthe constant

","value":"C"},{"text":"

Either of these

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":3},{"id":156258,"question":"When a constant potential difference is applied\r\nacross the conductor, the drift velocity of electrons:","choices":[{"text":"

Increases

","value":"A"},{"text":"

Decreases

","value":"B"},{"text":"

Remains\r\nthe constant

","value":"C"},{"text":"

Either of these

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":3},{"id":156257,"question":"The term drift velocity is used when the ends of\r\na wire are:","choices":[{"text":"

Connected to a laser\r\nsource

","value":"A"},{"text":"

Connected to a voltage\r\nsource

","value":"B"},{"text":"

Not connected to a\r\nvoltage source

","value":"C"},{"text":"

At different values of\r\npotential

","value":"D"},{"text":"

Both\r\n(B) and (D)

","value":"E"}],"correctAnswer":5},{"id":156256,"question":"If the ends of a wire are connected to a battery\r\nan electric field E will be set up at:","choices":[{"text":"

The ends of the wire\r\nonly

","value":"A"},{"text":"

Mid points of the wire\r\nonly

","value":"B"},{"text":"

Every point within the\r\nwire

","value":"C"},{"text":"

At\r\nnodes only

","value":"D"},{"text":"

Both (B) and (D)

","value":"E"}],"correctAnswer":4},{"id":156255,"question":"

The rate at which the\r\nfree electrons pass through any section of a metallic wire from right to left\r\nis:

","choices":[{"text":"

Greater than the speed\r\nat which they pass from left to right

","value":"A"},{"text":"

Less than the speed at\r\nwhich they pass from left to right

","value":"B"},{"text":"

The\r\nsame speed at which they pass from left to right

","value":"C"},{"text":"

Any of above

","value":"D"},{"text":"

None of them

","value":"E"}],"correctAnswer":3},{"id":156253,"question":"

The rate at which the\r\nfree electrons pass through any section of a metallic wire from right to left\r\nis:

","choices":[{"text":"

Greater than the speed\r\nat which they pass from left to right

","value":"A"},{"text":"

Less than the speed at\r\nwhich they pass from left to right

","value":"B"},{"text":"

The\r\nsame speed at which they pass from left to right

","value":"C"},{"text":"

Any of above

","value":"D"},{"text":"

None of them

","value":"E"}],"correctAnswer":3},{"id":156252,"question":"The free electrons in metals:","choices":[{"text":"

Are\r\nin random motion and their speed depends upon temperature

","value":"A"},{"text":"

Move in particular\r\ndirection

","value":"B"},{"text":"

Move with speed of\r\nlight

","value":"C"},{"text":"

Move such that their\r\nspeed does not depend on their temperature

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":1},{"id":156251,"question":"In a metal, the valence electrons are:","choices":[{"text":"

Attach to individual\r\natoms

","value":"A"},{"text":"

Not attached to\r\nindividual atoms

","value":"B"},{"text":"

Free to move within the\r\nmetal

","value":"C"},{"text":"

Both (A) and (C)

","value":"D"},{"text":"

Both\r\n(B) and (C)

","value":"E"}],"correctAnswer":5},{"id":156250,"question":"The positive charge moving in one direction is\r\nequivalent in all external affects to a:","choices":[{"text":"

Negative charge is\r\nmoving in the same direction

","value":"A"},{"text":"

Positive\r\ncharge is moving in the opposite direction

","value":"B"},{"text":"

Negative charge moving\r\nin the opposite direction

","value":"C"},{"text":"

Positive charges moving in the same direction

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":2},{"id":156249,"question":"

The current of 1 ampere\r\nis passing through a conductor. The charge passing through it in half a minute\r\nis:

","choices":[{"text":"

One coulomb

","value":"A"},{"text":"

0.5 coulomb

","value":"B"},{"text":"

30 coulomb

","value":"C"},{"text":"

2 coulombs

","value":"D"},{"text":"

None of these

","value":"E"}],"correctAnswer":3}]