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Ohm's Law Quiz

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Questions and Answers

What does Ohm's law state?

The voltage across a conductor is directly proportional to the current flowing through it.

Under what conditions is Ohm's law valid?

All physical conditions and temperatures remain constant.

What happens to the voltage across a conductor if the current flowing through it doubles?

The voltage across the conductor also doubles.

Explain the relationship between voltage and current in a conductor according to Ohm's law.

The voltage is directly proportional to the current. Signup and view all the answers

What is the mathematical expression for Ohm's law?

V = IR Signup and view all the answers

What happens to the temperature of the filament in a light bulb as the current passing through it increases?

The temperature of the filament increases Signup and view all the answers

What is the unit of resistance and its symbol?

The unit of resistance is ohms, denoted by the symbol Ω Signup and view all the answers

Under what conditions does Ohm's law not hold true?

Ohm's law does not hold true if the provided temperature and other physical factors are not constant. Signup and view all the answers