A current carrying wire LN is bent in the from shown below. If wire carries a current of 10 A and it is placed in a magnetic field of 5 T which acts perpendicular to the paper outwards then it will experience a force
A)Zero
B)5N
C)30 N
D)20 N
Correct Answer:
B
Solution :
The given wire can be replaced by a straight wire as shown below. Hence force experienced by the wire \[\operatorname{F}=Bil=5\,\,\times \,\,10\times 0.1 =5 N\]