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A 3 A current flows through a 6 Ω resistor. What is the potential difference across the resistor?

easy MCQ 1 mark Class 10 · Science · Electricity
  1. 12 V
  2. 18 V
  3. 6 V
  4. 3 V
Answer
18 V

The correct answer is 18 V — Thus the voltage drop is 18 V.

Step-by-step solution

  1. Apply Ohm’s law: .
  2. Substitute and .
  3. Compute .
  4. Thus the voltage drop is 18 V.
Common mistake: Using instead of

Concept tested: Ohm's Law

Published · How this solution was prepared and checked

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