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Question 68Asked in DSSSB TGT Computer Science (Technical), 12 Sep 2025, Shift 1 (9:00 AM)

Two identical cells of emf = 1.5 V and internal resistance = 0.5 Ω are connected in series. If the current drawn from the cells is 1 A, then the effective…

Two identical cells of emf = 1.5 V and internal resistance = 0.5 Ω are connected in series. If the current drawn from the cells is 1 A, then the effective terminal potential difference of the cells will be __________.
  1. A1 V
  2. B0.75 V
  3. C2 V
  4. D0.5 V
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Correct answer: (C) 2 V

Explanation

In series, total emf = 1.5 + 1.5 = 3 V and total internal resistance = 0.5 + 0.5 = 1 Ω. Terminal voltage V = E - Ir = 3 - 1 x 1 = 2 V.

From DSSSB TGT Computer Science PYQ (Technical), 12 Sep 2025, Shift 1 (9:00 AM)

This is question 68 of DSSSB TGT Computer Science PYQ (Technical), 12 Sep 2025, Shift 1 (9:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.