Consider the given electric circuit : Calculate the following : (a) Total resistance of the circuit (b) The…
Consider the given electric circuit :
Calculate the following :
(a) Total resistance of the circuit
(b) The electric current drawn from the battery
(c) Potential difference between points P and Q
Solution
(a) 4 Ω and 1 Ω are in series, Rs = 4Ω + 1 Ω = 5 Ω
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1
Resistance across R and S, = +
R1
R1 = Ω
2 Ω and 3 Ω are in series, Rs1 = 2Ω + 3 Ω = 5 Ω
1
Resistance across P and Q, = +
R2
R2 = 2 Ω
Total resistance: R = R 1 + R2
=2+ 2
=5
V
(b) I =
R
I =
I = 2A
(c) V = I R
V =
2
V=5V
