Physics · Electromagnetic Induction
A rectangular loop of wire with width 'a' and length 'b' is coplanar with a long straight wire carrying a current I. The distance between the long wire and the closer side of the loop is r. The loop is pulled directly away to the right. What is the magnitude of the net magnetic force on the loop when the induced current in it is i?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1μ0 i I a b2π r(r + a)✓
- 2μ0 i I b2π a
- 3μ0 i I2π ln(rr + a)
- 4μ0 i I2π ln(r + ar)
Correct answer
μ0 i I a b2π r(r + a)
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