Question

Suppose you have 5H inductor and 10-ohm resistor, if you were to change the resistor to...

Suppose you have 5H inductor and 10-ohm resistor, if you were to change the resistor to 500ohm, how would the graph of current vs time be different from the 10-ohm resistor and would the current "settle" as same, higher, or lower value as 5H? (Please provide graph).

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Answer #1

Time constant in RL circuit , T1 = L/R = 5/10 = 0.5s

if resistance is changed , time constant T2 = 5/500 = 0.01s

So current will decay more quickly (in case of discharging) or increases more quickly  as time constant decreases.

After a long time, the current settle will be lower as the resistance is increased.

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