Javascript is required
1
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
A 10 $$\Omega$$ resistance is connected across 220V $$-$$ 50 Hz AC supply. The time taken by the current to change from its maximum value to the rms value is :
A
2.5 ms
B
1.5 ms
C
3.0 ms
D
4.5 ms
2
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
In a circuit consisting of a capacitance and a generator with alternating emf Eg = Eg0 sin$$\omega$$t, VC and IC are the voltage and current. Correct phasor diagram for such circuit is

JEE Main 2021 (Online) 22th July Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 96 English
A
JEE Main 2021 (Online) 22th July Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 96 English Option 1
B
JEE Main 2021 (Online) 22th July Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 96 English Option 2
C
JEE Main 2021 (Online) 22th July Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 96 English Option 3
D
JEE Main 2021 (Online) 22th July Evening Shift Physics - Alternating Current and Electromagnetic Induction Question 96 English Option 4
3
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II

List - I List - II
(a) $$\omega L > {1 \over {\omega C}}$$ (i) Current is in phase with emf
(b) $$\omega L = {1 \over {\omega C}}$$ (ii) Current lags behind the applied emf
(c) $$\omega L < {1 \over {\omega C}}$$ (iii) Maximum current occurs
(d) Resonant frequency (iv) Current leads the emf


Choose the correct answer from the options given below
A
a(ii), b(i), c(iv), d(iii)
B
a(ii), b(i), c(iii), d(iv)
C
a(iii), b(i), c(iv), d(ii)
D
a(iv), b(iii), c(ii), d(i)
4
JEE Main 2021 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
For a series LCR circuit with R = 100 $$\Omega$$, L = 0.5 mH and C = 0.1 pF connected across 220V$$-$$50 Hz AC supply, the phase angle between current and supplied voltage and the nature of the circuit is :
A
0$$^\circ$$, resistive circuit
B
$$ \approx $$ 90$$^\circ$$, predominantly inductive circuit
C
0$$^\circ$$, resonance circuit
D
$$ \approx $$ 90$$^\circ$$, predominantly capacitive circuit
JEE Main Subjects
© 2023 ExamGOAL