In the given circuit, R1=10Ω,R2=6Ω,E=10V. Select the correct statements from the following
A
Effective resistance of the circuit is 20Ω
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B
Reading of A1 is 1/2 amp
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C
Reading of A2 is 1/4 amp
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D
Reading of A3 is 1/8 amp
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Solution
The correct options are A Effective resistance of the circuit is 20Ω B Reading of A1 is 1/2 amp C Reading of A2 is 1/4 amp Potential difference across R2 is zero therefore current in three branches is zero. Therefore, current in two branch containing R1 will be same and the circuit will be simplified as shown Effective resistance of the circuit Reff=40×4040+40=20Ω\ Current through the circuit I=1020=(1/2) amp and reading of A1=12amp and reading of A2=14amp