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Alternating Current

JEE Main level, single correct, medium

185 of 190

Question 185 of 190

Alternating current can not be measured by D.C. ammeter because

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Answer: (C) average value of current for complete cycle is zero

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JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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More Physics practice

Alternating CurrentIn a series LCR circuit with $L = 10\,\text{mH}$ , $C = 1\,\mu\text{F}$ , the resonant angular frequency $\omega_0$ is:
Alternating CurrentIn an AC circuit, voltage $V = 100\sin(100t)$ and current $I = 100\sin(100t + \pi/3)$ . Power factor is:
Alternating CurrentIn a series LCR circuit, $R=10\,\Omega, L=100\,\text{mH}, C=10\,\mu\text{F}$ . Quality factor $Q$ of the circuit is:
Alternating CurrentThe electric current in the circuit is given as $i=i_{\mathrm{o}}(t / T)$ . The r.m.s current for the period $t=0$ to $t=T$ is $\_\_\_\_$ .
Alternating CurrentAn inductor of reactance $100 \Omega$ , a capacitor of reactance $50 \Omega$ , and a resistor of resistance $50 \Omega$ are connected in series with an AC source of 10 V , 50 Hz. Average power dissipated by the circuit is ________ W.
Alternating CurrentAn ac current is represented as
$\mathrm{i}=5 \sqrt{2}+10 \cos \left(650 \pi \mathrm{t}+\frac{\pi}{6}\right) \mathrm{Amp}$
The r.m.s value of the current is

JEE Main Physics practice question on Alternating Current (Transformers), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.