Q1PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Which of the following statement
regarding transformer is incorrect?
Physics · JEE
AC generator and transformer Short Tricks for JEE
20+ syllabus-aligned questions available
Quick answer
Short tricks for AC generator and transformer work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.
Use these AC generator and transformer shortcuts to save time in JEE Physics papers — then validate speed with 20+ MCQs on Goodmarks.
Short tricks for speed
AC generator and transformer focus drill
Solve 15 mixed MCQs for AC generator and transformer, 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
The input AC voltage to the transformer
is and output is . Then:
Q3PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Assertion (A): More the turns more is
the
resistance
Reason(R): Impedance of primary and secondary in a transformer is directly proportional
to number
of turns in the coils.
Q4PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
Which of the following will not increase voltage in a simple generator?
Q5PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The output power in step-up transformer used in practice is
Q6PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
The device which converts the
mechanical energy in to electric energy is
Q7PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
A step-up transformer of turns ratio 2: 1 has AC voltage applied to primary The frequency of AC output voltage across secondary is :
Q8PhysicsUnit 14: Electromagnetic Induction and Alternating Currents
What do we name the device which
increases the emf?
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Frequently asked questions
Are short tricks enough for AC generator and transformer in JEE?
No — tricks complement concepts. Master the theory first, then use shortcuts in timed MCQ practice.
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