CURRENT ELECTRICITY Multiple Choice Questions

1. The S.I. unit of power is
(a) Henry
(b) coulomb
(c) watt
(d) watt-hour

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2. Electric pressure is also called
(a) resistance
(b) power
(c) voltage
(d) energy

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3. The substances which have a large number of free
electrons and offer a low resistance are called
(a) insulators
(b) inductors
(c) semi-conductors
(d) conductors

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4. Out of the following which is not a poor conductor ?
(a) Cast iron
(b) Copper
(c) Carbon
(d) Tungsten

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5. Out of the following which is an insulating material ?
(a) Copper
(b) Gold
(c) Silver
(d) Paper

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6. The property of a conductor due to which it passes
current is called
(a) resistance
(b) reluctance
(c) conductance
(d) inductance

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7. Conductance is reciprocal of
(a) resistance
(b) inductance
(c) reluctance
(d) capacitance

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8. The resistance of a conductor varies inversely as
(a) length
(6) area of cross-section
(c) temperature
(d) resistivity

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