Revision: Current Electricity

15 Current Electricity - Revision Quiz

Test your understanding of Current Electricity here:

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1) A metal wire of length l and diameter d has a resistance of 10 Ω. If another wire of the same material is 0.5l in length and 0.5d in diameter, what is its resistance?

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2) What is the voltmeter reading in the circuit below, given that the ammeter reads 2.0 A?

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3) The current in a small torch bulb is 0.40 A. What is the total electric charge which passes a point in the circuit in 5 minutes?

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4) What are the correct units for electric current and charge?

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5) What is an electromotive force?

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