MHT CET 2026 Physics question

Physics Alternating Current MHT CET 2026

In an LCR series circuit, the potential difference across the terminals of the inductor, capacitor and resistor is 60 V, 30 V and 40 V respectively. Then supply voltage will be equal to

(A)10 V
(B)50 VCorrect
(C)70 V
(D)130 V

Answer: (B)

Solution

In a series LCR circuit the voltages across L and C are out of phase with each other and both are out of phase with the voltage across R (which is in phase with the current). So the supply voltage is the phasor sum \sqrt{V_R^2 + (V_L - V_C)^2}\sqrt{40^2 + (60-30)^2}$

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-100246