Physics · JEE

Hard Alternating currents, peak and RMS value of alternating current/voltage MCQs for JEE

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Hard Alternating currents, peak and RMS value of alternating current/voltage MCQs train multi-concept problem solving — attempt after mastering easy and medium sets (16+ on Goodmarks).

Push your limits with hard Alternating currents, peak and RMS value of alternating current/voltage MCQs designed for JEE Advanced-level thinking. 16+ questions with detailed solutions.

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Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Choose the incorrect statement.
Q2PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
An alternating voltage given as V=\boldsymbol{V}= 1002sin100t\mathbf{1 0 0} \sqrt{\mathbf{2}} \sin 100 t \quad is applied to a capacitor of 1μF1 \mu F. The current reading of the ammeter will be equal to mA\mathrm{mA}
Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The average half-cycle value of a sine wave with a 40V40 V peak is
Q4PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
A sinusoidal voltage V=200sin314tV=200 \sin 314 t is applied to a 10Ω10 \Omega resistor. Find rms current
Q5PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
An LC circuit has L=5mHL=5 \mathrm{mH} and C=20μFC=20 \mu \mathrm{F} v=5×103\boldsymbol{v}=\mathbf{5} \times \mathbf{1 0}^{-\mathbf{3}} coswt is supplied. is twice the resonant frequency. Find the maximum charge stored in the capacitor:
Q6PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
In an a.c. circuit V\mathrm{V} and I are given by V=50sin50tV=50 \sin 50 t volt and I=I= 100sin(50t+π/3)mA.100 \sin (50 t+\pi / 3) \mathrm{mA} . The power dissipated in the circuit
Q7PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
In a circuit the coil of a choke:
Q8PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The figure given shows the variation of an alternating emf with time. What is the average value of the emf for the shaded part of the graph?

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After 70%+ accuracy on medium MCQs and once core formulas are automatic.