1.

A current of 10 ampere is flowing in a wire of length 1.5 m. A force of 15 N acts on it when it is placed in a uniform magnetic field of 2 tesla. The angle between the magnetic field and the direction of the current is            [MP PMT 1994]

A.            \[30{}^\circ \]                      
B.            \[45{}^\circ \]
C.            \[60{}^\circ \]                      
D.            \[90{}^\circ \]
Answer» B.            \[45{}^\circ \]


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