MCQs with solutions of Alternating current for NEET/JEE & 12th boards
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Course
NEET/JEE 11th 12th Board
Institution
Neet & Jee
these are some Multiple choice questions with there answers of Alternating current for NEET/JEE or class 12th students. questions are divided into two docs part 1 and part 2.
Q3. An alternating e.m.f. is applied to purely capacitive circuit. The phase
relation between e.m.f. and current flowing in the circuit is or In a circuit
containing capacitance only
(a) e.m.f. is ahead of current by 𝜋/2 (b) Current is ahead of e.m.f. by 𝜋/2
(c) Current lags behind e.m.f. by 𝜋 (d) Current is ahead of e.m.f. by 𝜋
Q4. An e.m.f. 𝐸 = 4 𝑐os(1000𝑡) volt is applied to an 𝐿R −circuit of inductance 3
mH and resistance 4 ohms. The amplitude of current in the circuit is
(a) 4/ √7 A (b) 1.0 𝐴 (c) 4/ 7 A (d) 0.8 A
Q5. A capacitor has a capacitance of 1/𝜋 𝜇F. Find the reactance for a frequency
of
(i) 50 Hz (ii) And 106 Hz
Q6. A pure inductance of 1.0 𝐻 is connected across a 110 𝑉, 70 𝐻z source. Find
the
(a) reactance, (b) current, and (c) peak value of current.
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