ElectroMagnetic InductionHard
Question
A triangular loop as shown in the figure is started to being pulled out at t = 0 from a uniform magnetic field with a constant velocity v. Total resistance of the loop is constant and equals to R. Then the variation of power produced in the loop with time will be:
Options
A.linearly increasing with time till whole loop comes out
B.increases parabolically till whole loop comes out
C.P α t3 till whole loop come out
D.will be constant with time
Solution
A =
× 6 × 4 − 
× 2 νt tan 37o × νt⇒ φ = B A
⇒ e =
= + Bv2 
× 2t = iR′ i α t
p α t2
⇒ P ∝ t2 (parabolic variation)
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