Question # 1

Which instrument is expensive and difficult to use?

Choose an answer

Voltmeter

Potentiometer

CRO

Both A and C

Both A and B

The interior of a hollow charged metal sphere is a region which:

Choose an answer

Contain some magnitude of electric field

Is full of electric field lines

Is field-free region

Either (A) or (B)

None of these

The electric flux through any surface depends upon:

Choose an answer

Intensity of electric field

Area of the surface

Angle between intensity and area

All of these

None of these

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

Choose an answer

Increases

Decreases

Remains the constant

Either of these

None of these

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

Choose an answer

Increases

Decreases

Remains the constant

Either of these

None of these

The surface destiny of charge is defined is:

Choose an answer

Charge per volume

Mass per volume

Charge per area

Mass per area

Both (B) and (C)

The best conductor is:

Choose an answer

Silver

Copper

Aluminimum

Both B and C

None of them

Tick the correct statement:

Choose an answer

Both the potential and potential difference is scalars

Potential is a scalar but potential difference is a vector

Both are vectors

Potential is vector but potential difference is scalar

None of these

Gaussian surface is always:

Choose an answer

Rectangular

Spherical

Cylindrical

Box shape

Any of these

The positive charge moving in one direction is equivalent in all external affects to a:

Choose an answer

Negative charge is moving in the same direction

Positive charge is moving in the opposite direction

Negative charge moving in the opposite direction

Positive charges moving in the same direction

None of these

In gases, the charge carriers are:

Choose an answer

Electrons

Positive ions

Negative ions

Both A and C

Both A and B

Another mean of electric potential energy per unit charge is given by:

Choose an answer

Electric intensity

Potential gradient

Electric Flux

Potential difference

None of these

An important part of photocopier is:

Choose an answer

Toner cartridge

Deflection plates

Charging electrode

Print head

None of these

In case of metallic conductors, the change carries are:

Choose an answer

Protons

Electrons

Antiprotons

Positrons

Both (A) and (B)

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

Choose an answer

Decreasing from zero to maximum

Increasing from zero to maximum

Decreasing from maximum to zero

Increasing from maximum to zero

Both (A) and (D)

The term drift velocity is used when the ends of a wire are:

Choose an answer

Connected to a laser source

Connected to a voltage source

Not connected to a voltage source

At different values of potential

Both (B) and (D)

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:

Choose an answer

Same

Different

Opposite to each other

At 60º with each other

Both (B) and (C)

Field lines are closer to each other in the region where the field is:

Choose an answer

Stronger

Weaker

Much weaker

Absent

None of these

The number of field lines passing through unit area held perpendicular to the field lines represent:

Choose an answer

Flux in that region

Intensity of the field

Charge

Area of the region

None of these

Xerography means:

Choose an answer

Dry writing

Wet writing

Poor writing

Excellent writing

Both (A) and (B)

Heating effect of current utilized in:

Choose an answer

Electric motor

Electric toaster

Electroplating

Electric kettle

Both (B) and (D)

The value of resistivity is the least for:

Choose an answer

Copper

Aluminimum

Silver

Tungsten

Iron

Selenium is:

Choose an answer

An insulator

A conductor

Insulator in the dark and becomes conductor when exposed to light

Conductor in the dark only

None of these

Kirchhoff's first rule is also called:

Choose an answer

Loop rule

Thumb rule

Point rule

Right hand rule

None of these

The current that flows through the coil of a motor causes

Choose an answer

Its shaft to revolve

Its brushes to rotate

Motor to move

Its shaft to rotate

None of these

The obvious effect/s of current is/are:

Choose an answer

Heating effect

Magnetic effect

Chemical effect

Both (C) and (B)

All of these

The magnitude of chemical Effects depends upon:

Choose an answer

Nature of liquid

Quantity of Electricity passed through the liquid

Color of the liquid

Both (A) and (C)

Both (A) and (B)

The passage of current is accompanied by a magnetic field in the surrounding space:

Choose an answer

Always accompanied

Sometimes accompanied

Never accompanied

Any of above

None of these

When two spherical conducting balls at different potentials are joined by a metallic wire, after some time:

Choose an answer

Both the conductors are at the same potential

Potential difference across the conductors remain constant

Potential difference across the conductors becomes zero

Both (A) and (B)

Both (A) and (C)

As the current flows through the wire

Choose an answer

It generates heat in the wire

It produces sound in the wire

Resistance of the wire decrease

Voltage across the ends is the increase

None of these

The passage of current is accompanied by a magnetic field in the surrounding space:

Choose an answer

Always accompanied

Sometimes accompanied

Never accompanied

Any of above

None of these

More Classes

Other Links

Physics ECAT Pre Engineering Chapter 13 Current Electricity Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer