Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Choose the incorrect statement.
Physics · JEE
Alternating currents, peak and RMS value of alternating current/voltage Short Tricks for JEE
16+ syllabus-aligned questions available
Quick answer
Short tricks for Alternating currents, peak and RMS value of alternating current/voltage work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.
Use these Alternating currents, peak and RMS value of alternating current/voltage shortcuts to save time in JEE Physics papers — then validate speed with 16+ MCQs on Goodmarks.
Short tricks for speed
Alternating currents, peak and RMS value of alternating current/voltage focus drill
Solve 15 mixed MCQs for Alternating currents, peak and RMS value of alternating current/voltage, review every explanation, and note formulas you hesitated on.
Dimensional check first
Before solving, verify each term has consistent SI dimensions — eliminates wrong options quickly in JEE MCQs.
Limiting cases
Substitute extreme values (t→0, m→∞, θ→0) to sanity-check your final expression.
Syllabus context
Part of Electromagnetic Induction and Alternating Currents in JEE Main Physics.
- Electromagnetic induction: Faraday's law, induced emf and current, Lenz's law, eddy currents, self and mutual inductance
- Alternating currents, peak and RMS value of alternating current/voltage
- Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
- AC generator and transformer
Free sample questions
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Q2PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
An alternating voltage given as is applied to a
capacitor of . The current reading of
the ammeter will be equal to
Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The average half-cycle value of a sine
wave with a peak is
Q4PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
A sinusoidal voltage is
applied to a resistor. Find rms
current
Q5PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
An LC circuit has and
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 and I are given by volt and
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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Popular questions in Alternating currents, peak and RMS value of alternating current/voltage
- An alternating voltage given as \( \boldsymbol{V}= \) \( \mathbf{1 0 0} \sqrt{\mathbf{2}} \sin 100 t \quad \) is applied…
- In an a.c. circuit \( \mathrm{V} \) and I are given by \( V=50 \sin 50 t \) volt and \( I= \) \( 100 \sin (50 t+\pi / 3)…
- A steady current of magnitude \( I \) and an \( A C \) current of peak value \( I \) are allowed to pass through identic…
- A steady current of magnitude \( I \) and an \( A C \) current of peak value \( I \) are allowed to pass through identic…
- If the input frequency of a full wave rectifier is \( 50 H z \) ac. Its output frequency is…
- The average half-cycle value of a sine wave with a \( 40 V \) peak is…
Frequently asked questions
Are short tricks enough for Alternating currents, peak and RMS value of alternating current/voltage in JEE?
No — tricks complement concepts. Master the theory first, then use shortcuts in timed MCQ practice.
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