Question # 1

What is the resistance of carbon resistor which has band brown black brown.

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100 Ohm

1000 Ohm

10 Ohm

1.0 Ohm

The drift velocity is of order:

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10^-13m/s

10³ m/s

10^-3m/s

10^-4m/s

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

The resistivity of --------------------decrease with the increase in temp

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Gold

Silver

Copper

Silicon

Resistivity at a given temperature depends upon.

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Area of cross section

Length

Nature of material of conductor

Both length and area

During electrolysis process, density of CuSO₄ solution

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Remains constant

Decreased

Increased

None of these

The head produced by the passage of current through a resistor is.

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H= I²Rt

H = IR²t

H = 1/Rt

H = I²/Rt

Two resistance of 2 Ohm each are connected in parallel combination equivalent resistance will be.

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4 Ohm

2 Ohm

1 Ohm

8 Ohm

the current which flows from a point at higher. potential to point at lower potential is called.

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Electric current

Conventional current

Either of these

None of above

The Kirchhoff 1^st rule is manifestation of:

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Law of conservation of mass

Law of Conservation of charge

Law of conservation of energy

None of above

Thermosouple is an arrangement of two different metals:

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Two convert heat energy into electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electrical energy into heat energy

The condition for the wheatstone bridge to be balanced is given by

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None of above

A rheostat can operate as.

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Amplifier

Potential divider

Oscillator

Transformer

The vessel containing the tow electrodes and liquid to known as.

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Chemical cell

Volt cell

Volta cell

Volta meter

Terminal potential difference is greater than emf of the cell when

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Circuit is open

Circuit is closed

small battery is charged by bigger battery

None of these

If 1 x 10⁷ electrons passes through a conductor in 1.0 micro second , then the current is.

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2 A

1.6 A

2.6 x 10^-6 A

1.6 x 10^-6 A

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

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