Class 10 · Science · Science

11. Electricity

Try question 1

The SI unit of electric current is the

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Answer and explanation

Answer: B. ampere

Current is measured in amperes (A) using an ammeter.

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Try question 2

Two resistors of 4 Ω each are joined in series. Their total resistance is

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Answer and explanation

Answer: C. 8 Ω

In series, resistances add: 4 + 4 = 8 Ω.

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Try question 3

A 3 V battery drives a current of 0.5 A through a resistor. Its resistance is

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Answer and explanation

Answer: B. 6 Ω

R = V/I = 3/0.5 = 6 Ω (Ohm's law).

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