1.5v to 1.5kv
Switch opened to 1.5 voltage source through (R1) 1ohm resistor = 1.5amps through L at T=infinity.
Switch opened to L. …Inductor acts as Voltage source, current at L = 1.5amps. Using ohms law 1.5amps through (R2) 1000ohm resistor A*R =1.5kv.. EMF…E= -L di/dt
1500v= -2di/dt
di/dt= -750 a/s
