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Question

A straight wire of length 0.5 metre and carrying a current of 1.2 ampere is placed in a uniform magnetic field of induction 2 tesla. If the magnetic field is perpendicular to the length of the wire, the force acting on the wire is:


A
2.4 N
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B
1.2 N
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C
3.0 N
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D
2.0 N
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Solution

The correct option is B 1.2 N
$$F=Bilsin\theta $$ ,Here $$ \theta=90^0$$
$$F=2\times 1\cdot 2\times 0\cdot 5$$
$$F= 1\cdot 2 N$$

Physics

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