The diagram above depicts an RC-circuit where C=5.60 micro-farads, R0=29.0 Ohms,
ID: 2178127 • Letter: T
Question
The diagram above depicts an RC-circuit where C=5.60 micro-farads, R0=29.0 Ohms, R1=11.5 Ohms, R2=25.0 Ohms, and V=5.50 Volts. The capacitor is initially uncharged.
1) What is the current through R1 immediately after the switch S is closed?
2) What is the current through R2 immediately after the switch S is closed?
3) What is the current through the capacitor immediately after the switch S is closed?
4) What is the current through R1 after the switch S has been closed for a very long time? Assume that the batter does not go dead.
Explanation / Answer
Writing kirchoff's law for both loops,
(i1+i2)29+11.5i2=5.5
(i1+i2)29+25i2=5.5
a)i1=0.1022A
b)i2=0.0470A
c) current through the capacitor immediately after the switch S is closed=i2=0.0470A
d)i=V(R0+R1)=0.1358A