Question

Q15) Three resistors of 4 ohms ,6 ohms and 12 ohms are connected in parallel.
The combination of of above resistors is connected in series to a resistance of 2
ohms and then a battery of 6 volt. Draw a circuit diagram and calculate
a) Find the total resistance of the circuit.
b) Current in main circuit.​

Answer 1

The effective resistance of the circuit is :

1/R = 1/4+1/6+1/12

1/R = (3+2+1)/12 = 6/12

R = 2 ohm [For parallel]

For series,

R(eff)= 2+2 = 4 ohm

Therefore,

R = 4 ohm

V = 6 volt

I = V/R = 6/4 = 1.5 A

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