JEE Physics · Easy

Current Electricity: Short Circuit MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Short CircuitEasyQuestion 31623

Question

When a cell is short-circuited, terminal voltage equals:
  1. A
    EMF
  2. B
    Zero
    Correct
  3. C
    EMF/2
  4. D
    2×EMF

Correct answer

Zero

Explanation

V = E − Ir = E − I_sc×r. At short circuit, R_ext = 0, so I_sc = E/r and V = E − (E/r)×r = 0.