Question
PLEASE EXPLAIN IN DETAIL HOW TO DO THESE TWO PROBLEMS
Questions 1 and 2 apply to the circuit below: The battery voltage in this circuit is decreasing. At a given instant, the battery voltage is 40V, and the voltage across the inductor is 5V. Considering the direction of the inductor voltage, what is the magnitude of the voltage across the resistor at this instant? 45 V 35 V 40 V 20 V At a different instant, the voltage across the inductor is found to be 40V. At this instant, what is the rate of change of current with respect to time? 5 V 10 V 15 V 20 V
Explanation / Answer
1) 40+5 = 45V so A is ans
2) V = Li'
so i' = 40/2 = 20
So D is ans