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Questions  

In the figure, the force on the wire ABC in the uniform magnetic field (B = 2 tesla) will be _____

a
43+2πN
b
20 N
c
30 N
d
40 N

detailed solution

Correct option is C

Le  = Equivalent length = Length    AC=32+42 m=5mF=iLeB=3× 5× 2N=30  N.

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Two infinitely current carrying insulated wires AB and CD are carrying same current  I. The wires cross each other at right angles as shown in figure. Three identical conductors P1Q1 , P2Q2 and P3Q3, carrying same current are placed a shown in figure and the forces acting on them are F1 , F2 and F3 respectively. Then select the correct option.


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