The magnetic flux linked with coil, in weber, is given by the equation, ϕ=5t2+3t+16 The induced emf in the coil in the fourth second is

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Detailed Solution

|e|=dϕdt=ddt5t2+3t+16=(10t+3) When t=3s,e3=(10×3+3)=33V When t=4s,e4=(10×4+3)=43VHence, emf induced in fourth second=e4−e3=43−33=10V

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