Question # 1

According to Ohm's law V =________

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I²R

IR²

IR

I/R

The unit of (ρ) in formula R=ρ.L/a is______________.

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Ω

Ω-m

Ω-m²

Ω-m^-2

Which type of image is formed by a convex lens on a screen:

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Inverted and real

Inverted and virtual

Upright and real

Upright and virtual

What happens to the intensity of the brightness of the lamps connected in series as more and more lamps are added?

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Increases

Decreases

Remains the same

Can not be predicted

The unit of resistance is:

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Ω-m

Ω

V

C

The rate of flow of charge through any cross-sectional area is called:

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potential difference

Energy

Coulomb

Electric current

The current used in houses is:

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A.C.

Conventiona current

Current

D.C

The mirror whose inner surface is reflecting is called:

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Concave mirror

Convex mirror

Mirror

Lens

The resistance of conductors is due to:

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Protons

Fixed atoms

Molecules

Neutrons

The A.C. used in our houses has frequency _____ cycle/sec

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60

30

50

130

The equivalent resistance of a parallel combination is

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equal to sum of all resistance

is greater than the largest resistance of combination

is smaller than the smallest resistance of combination

All of these

In mathematical form of Ohm's law, "R" is:

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Resistance

Specific resistance

Resistor

Resistivity

What is the voltage across a 6Ω resistor when 3 A of current passes through it?

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2 V

9 V

18 V

36 V

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