ircuit below, the switch was opened at t=0 after being closed for a long time. How many Joules of energy does the indr 30 4 mH3ti v 32n

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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In the circuit below, the switch was opened at t=0 after being closed for a long time. How many Joules of energy does the inductance (coil) initially store?
t= 0
30
39 -
'{ 6 2
4 mH 3fi
v $20
12 V
O a) 2mJ
O B) 8 mJ
O C) 1 mJ
OD) 4 mJ
TO) 16mJ
Transcribed Image Text:In the circuit below, the switch was opened at t=0 after being closed for a long time. How many Joules of energy does the inductance (coil) initially store? t= 0 30 39 - '{ 6 2 4 mH 3fi v $20 12 V O a) 2mJ O B) 8 mJ O C) 1 mJ OD) 4 mJ TO) 16mJ
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