1. Magnetic field inside a long solenoid with cross-sectional area A is given by B=(mu)nI where n is the number of turns per unit length and I is the current. Suppose that the current is given by I(t) = I(0)e^(a*t) where t is the time and a and I(0) are constants. What is the magnetic flux through the solenoid as a function of t? Hence find the induced emf outside the solenoid as a function of time 2. Relevant equations Magnetic flux is the integral of B.dA Faraday's Law: Emf = rate of change of magnetic flux through loop Not quite sure how to start. Could someone please help!!