NEET Physics Ohm's Law MCQ Question
Which of the following statements about resistance and current in a circuit is correct?
Ohm's Law states that the current through a conductor is directly proportional to the voltage across it.
Resistance decreases as the temperature of a conductor increases.
In a closed circuit, the current will always be zero if the voltage is maintained.
The total resistance in a parallel circuit is always greater than the resistance of the smallest resistor in the circuit.
Correct Answer
Detailed Explanation
Ohm's Law indicates that the current (I) is directly proportional to the voltage (V) across a conductor, provided the temperature remains constant. Option B is incorrect as resistance typically increases with temperature. Option C is false because current flows when there is a voltage. Option D is incorrect because in a parallel circuit, the total resistance is always less than the smallest resistance.
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