Moving Charges And Magnetism Ques 73
73. A straight wire of length $0.5$ metre and carrying a current of $1.2$ ampere is placed in uniform magnetic field of induction $2$ tesla. The magnetic field is perpendicular to the length of the wire. The force on the wire is
[1992]
(a) $2.4$ $N$
(b) $1.2$ $N$
(c) $3.0$ $ N$
(d) $2.0$ $N$
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Answer:
Correct Answer: 73.(b)
Solution:
- (b) $F=Bi \ell=2 \times 1.2 \times 0.5=1.2 $ $N$
BETA
