A coil with an inductance coefficient of 0.5 Henry, a resistance of 10 ohms, and a number of turns of 300 turns is connected to the battery. At the moment the current reached 70% of its constant value, the time rate of change in the magnetic flux was 0.1 web per second. Calculate 1- The electromotive force induced when it is closed. 2- The time rate of change in current when the current reaches 60% of its constant value

A coil with an inductance coefficient of 0.5 Henry, a resistance of 10 ohms, and a number of turns of 300 turns is connected to the battery. At the moment the current reached 70% of its constant value, the time rate of change in the magnetic flux was 0.1 web per second. Calculate 1- The electromotive force induced when it is closed. 2- The time rate of change in current when the current reaches 60% of its constant value