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18/07/2021 1:55 pm
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The circuit diagram given below shows the combination of three resistors R1 R2 and R3 :
Find :
(i) total resistance of the circuit.
(ii) total current flowing in the circuit.
(iii) the potential difference across R1.
1 Answer
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18/07/2021 1:57 pm
(i) Total resistance of two resistors that are connected in parallel is
1/R’ = 1/3 + 1/6
1/R’ = 3/6
R’ = 2 ohms
Total resistance of the circuit = 2 + 4 ohms
= 6 ohms
(ii) Total current flowing through the circuit = V/total resistance
I = 12/6 = 2 amps
(iii) Potential difference across R1 = R1 x I
= 4 x 2 = 8V.