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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.
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What is the mathematical expression for Ohm's law?
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What happens to the temperature of the filament in a light bulb as the current passing through it increases?
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What is the unit of resistance and its symbol?
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Under what conditions does Ohm's law not hold true?
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