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b) A 30.0mH inductor is connected to a DC power supply. The power supply's emf is fixed at 10.0V. i. If you turn down the

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b) A 30.0mH inductor is connected to a DC power supply. The power supply's emf is fixed at 10.0V. i. If you turn down the power supply's current at a constant rate, dI/dt=50.0A/s, Calculate the magnitude of the back emf? [3 marks] ii. Determine rate would you need to turn down the current so that the back emf is 7.0 v? [3 marks]

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