Diode Circuits on Power Electronics related Questions and Answers

Question :   A circuit is so formed such that source-R-L-diode-switch are all in series. Consider the initial current in L to be zero. The diode is so connected that it is forward biased when switch is closed. When the switch is closed, 1. the current will decay exponentially & the voltage will increase exponentially 2. the current will increase exponentially & the voltage will decay exponentially 3. the current will fall to zero & the voltage both will decay exponentially 4. the voltage and the current both remain constant Answer :   2 - the current will increase exponentially & the voltage will decay exponentially