Magnetic field due to currentHard
Question
For a magnetic needle placed in a uniform magnetic field, which of following are correct :-
(a) F ≠ 0, τ ≠ 0 (b) F ≠ 0, τ = 0
(c) F = 0, t ≠ 0 (d) F = 0, t = 0
(a) F ≠ 0, τ ≠ 0 (b) F ≠ 0, τ = 0
(c) F = 0, t ≠ 0 (d) F = 0, t = 0
Options
A.a, b
B.a, c
C.c, d
D.b, d
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