Question # 1

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

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Same

Different

Zero

Infinite

Resistance tolerance for gold colour is.

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50%

30%

20%

5%

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

The free electrons experience force.

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In direction of -E

In direction of E

Both A and B

All of the above

The powers of two electric bulbs are 100w and 200w. Which are connected to power supply of 220 V. The ratio of resistance of their filament will be:

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1:2

2:1

1:3

4:3

By increasing the temperature of conductor, the flow rate of charges.

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Increase

Remains constant

Decreases

Changes exponentially

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

Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:

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3Ω

4Ω

4.5Ω

5Ω

Resistance tolerance of silver band is.

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10%

6%

7%

5%

5 A of current flows through a conductor in 2 minutes, charge in the wire is.

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500 C

600 C

400 C

10 C

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

The SI unit of resistivity is.

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Ohm m-2

Ohm m-1

Ohm m

Ohm

The fraction change in resistance per Kelvin is known as:

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Temperature coefficient of Resistance

Coefficient of voltage of change

Thermal expansion

All of the above

When a wire is stretched and its radius becomes r/2, then its resistance will be

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16 R

4 R

2R

0

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

If the resistance of 500 Ohm have fourth band of silver colour then its upper maximum resistance will be.

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600 Ohm

550 Ohm

450 Ohm

400 Ohm

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