PYQs Based Test - 01 : Electrical Circuits and Electromagnetism

A series R-C circuit is excited by a 1∠0 V sinusoidal ac voltage source. The locus diagram of the phasor current 𝐼= (x + jy) A, when C is varied, while keeping R fixed, is

In the circuit shown below, the angular frequency ω at which the current is in phase with the voltage is ________ rad/s.

A beam of monochromatic light passes through two glass slabs of the same geometrical thickness at normal incidence. The refractive index of the first slab is 1.5 and that of the second, 2.0. The ratio of the time of passage of the beam through the first to the second slab is __________ .

In the given circuit, superposition is applied. When V₂ is set to 0 V, the current I₂ is -6 A. When V­₁ is set to 0 V, the current I₁ is +6 A. Current I₃ (in A) when both sources are applied will be (up to two decimal places) _____.

In the circuit shown below, a step input voltage of magnitude 5 V is applied at node A at time t = 0. If the capacitor has no charge for t < 0, the voltage at node P at t = 6 μs is ________ V. (Answer should be rounded off to two decimal places)