Given below are two statements: Statement I: Maximum power is… | JEE Main 2023 (10 Apr, Shift 1)

Q44JEE Main 2023 · 10 APR · SHIFT 1Easy

Power, Power Factor & Wattless 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 AC 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 given below:

Show answer and solution

Answer: (d)

Statement I: at resonance $X_L = X_C$ , $Z = R$ is minimum, current is maximum, so power $I_{rms}^2R$ is maximum. True.
Statement II: in a pure resistor $\phi = 0$ , so $\cos\phi = 1$ and $P = V_{rms}I_{rms}$ is maximum. True.
So the answer is (d) both statements are true.

Report a mistake

More questions on Power, Power Factor & Wattless Current

What will be the phase difference between virtual voltage and virtual current when…MHT CET 2023 (14 May, Shift 2)
In a L-R circuit the inductive reactance is equal to the resistance R in the circuit. An…MHT CET 2023 (13 May, Shift 2)
A series LCR circuit is connected to an AC source of 220 V, 50 Hz. The circuit contains a…JEE Main 2023 (25 Jan, Shift 2)
The power factor of an R-L circuit is 1/√(2). If the frequency of AC is doubled the power…MHT CET 2023 (14 May, Shift 2)
In a series LR circuit, XL = R, power factor is P₁. If a capacitor of capacitance C with…MHT CET 2023 (10 May, Shift 1)
In a series LR circuit with XL = R, power factor P1. If a capacitor of capacitance C with…JEE Main 2023 (30 Jan, Shift 1)
If wattless current flows in the AC circuit, then the circuit is:JEE Main 2022 (25 Jun, Shift 1)
In an A.C circuit, V & I are given by V = 250sin (100t) volt and I = 10sin (100t + π/3) A…JEE Main 2022 (30 Jul, Shift 2)

Power, Power Factor & Wattless Current question from JEE Main 2023 (10 Apr, Shift 1)

More questions on Power, Power Factor & Wattless Current