If 1.5 A flows through R2... A. what is the potential difference supplied by the ideal...
If 1.5 A flows through R2...
A. what is the potential difference supplied by the ideal battery?
B. what is the voltage drop over R2?
C. what is the current through R3?
Homework Answers
A)
Let Inet is the current thrugh battery
current through R2, I2 = Inet*R3/(R2+R3)
1.5 = Inet*20/(20+20)
==> Inet = 1.5*40/20
= 3 A
net resistance of the ckt
Rnet = R1 + R2*R3/(R2+R3) + R4
= 10 + 20*20/(20+20) + 30
= 50 ohms
Apply, V = Inet*Rnet
= 3*50
= 150 volts <<<<<<<<<<<-----------Answer
B) voltage drop over R2, V2 = I2*R2
= 1.5*20
= 30 volts <<<<<<<<<<<-----------Answer
C) current through R3, I3 = Inet*R2/(R2+R3)
= 3*20/(20+20)
= 1.5 A <<<<<<<<<<<-----------Answer
Add Answer to:
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