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Question 21Asked in RRB JE CBT-1, 19 Feb 2026, Shift 2 (12:45 PM)

Which of the following arrangements produces a nearly uniform magnetic field in the

Which of the following arrangements produces a nearly uniform magnetic field in the central region of a circular current-carrying system under steady conditions?
  1. AUsing loops of varying radii
  2. BUsing multiple closely wound turns of identical radius with constant current
  3. CArranging loops in random orientations
  4. DAllowing current to vary with time in a single loop
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Correct answer: (B) Using multiple closely wound turns of identical radius with constant current

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 2 (12:45 PM)

This is question 21 of RRB JE CBT-1 PYQ 19 Feb 2026, Shift 2 (12:45 PM). 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.