73 questions in Chapter 12 Electricity - HI MCQ!

1 mV is equal to?

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Which is/ are incorrect?

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The electric current is a flow of electric charges, called electrons, in a conductor such as a metal wire.
Current is measured by an instrument called voltmeter.
It is the potential difference between the ends of the wire which makes the electric charge to flow in the wire.
When one coulomb of charge flows through any cross-section of a conductor in 1 second, the electric current flowing through it is said to be one ampere.

Electrical resistivity of any given metallic wire depends upon?

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Coulomb is the SI unit of?

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The electrical resistance of insulators is?

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A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is?

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The least resistance obtained by using 2 ohm, 4 ohm, 1 ohm and 100 ohm is?

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The values of mA and microA are?

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The resistance of a resistor is reduced to half of its initial value. In doing so, if other parameters of the circuit remain unchanged, the heating effects in the resistor will become?

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Three resistors of 1 ohm, 2 ft and 3 ohm are connected in parallel. The combined resistance of the three resistors should be?

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