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The figure-4.240 shows ·a square wire me...

The figure-4.240 shows ·a square wire mesh made of conducting wires. Here, each small square has side a. The structure is kept in uniform magnetic field B perpendicular to the plane of paper:

A

The magnetic force on the structure is `2sqrt(2) iBa`

B

The potential of point `B=` potential of point D

C

Potential of point `O=` potential of point B

D

The magnetic force on the structure is `sqrt(2) iBa`

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