The instantaneous value of emf and current in an A.C. circuit are; E=1.414sin(100πt−π4) , I=0.707sin(100πt) . The impedance of the circuit will be
1Ω
2Ω
√2Ω
12Ω
A
1Ω
B
2Ω
C
√2Ω
D
12Ω
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Solution
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Given : Imax=0.707A and Emax=1.414 volts Impedance Z=EmaxImax Z=1.4140.707 Z=2Ω
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