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Electricity

Science · CBSE Class 10 · English Medium · 20 questions and answers

Sample questions

Q: What is electric current?

A: The rate of flow of electric charge through a conductor; I = Q/t.

Q: What is the SI unit of electric current?

A: The ampere (A).

Q: Define one ampere.

A: One ampere is the flow of one coulomb of charge per second (1 A = 1 C/s).

Q: What is electric potential difference?

A: The work done to move a unit positive charge from one point to another; V = W/Q. Its SI unit is the volt (V).

Q: State Ohm's law.

A: At constant temperature, the current through a conductor is directly proportional to the potential difference across it; V = IR.

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