Question # 1

Tolerance of "Gold" band.

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±10%

±5%

±15%

±20%

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

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

The current flowing through each resistor of equal resistance in parallel combination is.

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Same

Different

Zero

Infinite

Heat energy is converted into electrical energy.

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Solar cells

thermocouples

Electric generators

None of above

A rheostat can be used as variable resistor as well as a-------------

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Potential divider

Current divider

Wheat stone bridge

Power divider

During electrolysis process, density of CuSO₄ solution

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Remains constant

Decreased

Increased

None of these

Heat generated by a 40 W bulb in one hour is.

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140 J

1440 J

14400 J

144000 J

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

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Gold

Silver

Copper

Silicon

If there is no fourth band, tolerance is shows as

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10%

If a charge Q flows through any cross section of the conductor in time t, the current I is

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I=Qt

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

Magnetic effect of current is used

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To detect a current

To measure a current

In electric motor

All of above

A wire uniform cross-section. A length L and resistance R is cut into two equal parts. The resistivity of each part will be:

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Doubled

Halved

Remain the same

One fourth

e.m.f is the conversion of --------------- energy into electrical energy

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Chemical

Solar

Light

None of these

The reciprocal of resistance is called.

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Capacitance

Resistance

Conductance

Inductance

Drift velocity of electrons is.

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10^-1 m/s

10^-2 m/s

10^-3 m/s

10³ m/s

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