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Current Electricity — JEE Main Physics MCQs with Solutions
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Sample questions with solutions
Q1 — medium · theory
An infinitely long positively charged straight 24-3. is the uniform surface charge density of a
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q2 — medium · theory
4 0 0
A. T2 4 2 m r3 (2) T 2 r m distance ‘l’. If the dipole is placed in a uniform ✓ Correct
B. T 1 m (4) T 1 2kq makes a very small angle with the electric
C. 8qE (2) 3qE
D. 90 (2) 150 (3) 4qE (4) 8qE
Q3 — medium · theory
Two infinite planes each with uniform surface 20-3. ELECTROSTATICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · theory
(2) 24-2. (2) ANSWER KEY 24-4. (2) 24-5. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · theory
������ × dA
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · theory
E (2sin)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · theory
A charge q is placed at the center of one of with charge Q on each, repel each other with
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q8 — medium · theory
an electric dipole is placed on x-axis in 21-5. A solid metal sphere of radius R having
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · theory
Three charged particles A, B and C with two shells are equal, the electric potential at
A. 1 (R r) ) Q (2) 1 (R 2r)Q ✓ Correct
B. 1 (R r) ) Q (4) 1 (2R r) Q
C. 3q than the initial position the kinetic energy of
D. 3 3q
Q10 — medium · theory
(2) 23-3. (2) 24-3. (3) 21-1. (3) 21-2. (4)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q11 — medium · theory
From Now If S&R are brought in contact then
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q12 — medium · theory
40 L 3 L
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · theory
(2) 21-4. (2) 24-8. (2) 20-1. (3) 20-2. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q14 — medium · theory
(3) 20-4. (1) 22-1. (2) 24-10. 16 24-11. 2
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q15 — medium · theory
20-1.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q16 — medium · theory
Five charges +������, +5������, −2������, +3������ and −4������ are
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q17 — medium · theory
charge q is enclosed inside the concentric
A. 815.1 nC (2) 8.8 C ✓ Correct
B. 0.485 mC (4) 4.44 C
C. x q2l 2 (2) x q2l 3
D. x q2l2 3 (4) x q2l2 3
Q18 — medium · theory
Three concentric spherical metallic shells X, Y 23-7. 64 identical drops each charged upto
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · theory
5
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · theory
As per gauss theorem,
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · theory
kq kq kq
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · theory
Let charges on shells be q1 and q2 24-12.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · theory
The vehicles carrying inflammable fluids
A. (1) To conduct excess charge due to air ✓ Correct
B. To alert other vehicles.
C. To protect tyres from catching dirt from
D. (4) It is a custom.
Q24 — medium · theory
and Z of radius a, b and c respectively [a < b 21-6. potential of 10 mV are combined to form a
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q25 — medium · theory
outer spherical shell is conducting 1 2q 3ˆi ˆj
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q26 — medium · numerical
E = E0(1 – ax2) 8 × 25√25
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q27 — medium · theory
m f
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · theory
(2) 24-7. (3) 24-9. (3) 23-1. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · theory
3 i 3 3 ˆj 5kˆ cosi
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q30 — medium · theory
m a 3
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D