Question B1A long solenoid of radius a carrying n turns per unit length is looped by a wire of resistance R asshown in the figure 6.0311(iii) Use Faraday's Lawa1Figure 6: A solenoid looped by a wire of resistance Rdi (t)dta) The current I(t) in the solenoid is decreasing at a constant rate = -a, and a is a positiveconstant. The magnetic field inside the solenoid is B = μonI.(i) Derive an expression for the induced current that flows through the loop.[5 marks](ii) Copy the drawing in your submission and indicate the direction of the induced currentthrough the loop. Justify your answer.df. E.di - - / // B.d$dtand find the direction and magnitude of the electric field inside the solenoid.2 marks]18 marks]b) At a time t₁: consider that the solenoid from part a has a constant current I, i.e. (d = 0). Atthe time tf: the solenoid is pulled out of the loop and set out in the loop in the opposite direction,compared to its position at time tį.(i) Calculate the changes in magnetic flux through the loop in the time interval At, i.e. A o(t) =o(tf) - (ti).

I have used lenz's formula and Maxwell's formula

Answered: A long solenoid of radius a carrying n…

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