NEETPhysicsAlternating Current
Given below are two statements: Statement I: Maximum power is dissipated in a circuit containing an inductor, a capacitor and a resistor connected in series with an A C source, when resonance occurs. Statement II: Maximum power is dissipated in a circuit containing pure resistor due to zero phase difference between current and voltage. In the light of the above statements, choose the correct answer from the options g
Options
- AStatement I is false but Statement II is true
- BBoth Statement I and Statement II are true
- CStatement I is true but Statement II is false
- DBoth Statement I and Statement II are false
Correct answer
B. Both Statement I and Statement II are true
Step-by-step solution
The formula for impedance is given by Z = R 2 + X L - X C 2 At resonance, X L = X C . So, Z m i n = R Power will be maximum when impedance is minimum. Thus the maximum power occurs in a purely resistive circuit.