10 JEE Main 2019 Alternating Current previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 previous-year questions from the Alternating Current chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Alternating Current chapter hub.
A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of   2.2 &#…
A 20 H inductor coil is connected to a 10 Ω resistance in series as shown in figure. The time at which rate of dis…
A series A C circuit containing an inductor 20   mH , a capacitor 120  μ F and a resistor 60   ]…
Consider the LR circuit shown in the figure. If the switch S is closed at t = 0 then the amount of charge that passes t…
In the figure shown, a circuit contains two identical resistors with resistance R = 5   Ω and an inductance…
In the above circuit, C = 3 2 μ F ,   R 2 = 20  Ω ,     L = 3 10 H and R 1 = 10  …
An alternating voltage V ( t ) = 220 sin 100 π t volt is applied to a purely resistive load of 50   Ω .…
A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000…
In the circuit shown, the switch S₁ is closed at time t=0 and the switch S₂ is kept open. At some later time (t₀ ), the…
A circuit connected to an ac source of emf e = e 0 sin ⁡ 100 t with t in seconds, gives a phase difference of 	…