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Alternating Current — JEE Main Physics MCQs with Solutions
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Sample questions with solutions
Q1 — medium · theory
Match List-I with List-II
A. Both Statement I and Statement II are ✓ Correct
B. Statement I is true but Statement II is
C. Statement I is false but Statement II is
D. Both Statement I and Statement II are
Q2 — medium · theory
(4) 24-2. (2) 24-3. (2) 24-4. (4) 24-5. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q3 — medium · numerical
(1) Graph between Magnetic susceptibility B=
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · theory
Conceptual. Note : Direction of magnetic field is in +���ˆ���
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · theory
resultant of g & r2 whose direction &
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · theory
Soft ferromagnetic materials are materials
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · theory
C0 0 A 15pF
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q8 — medium · theory
(4) 22-3. (2) 22-4. (4) 22-5. (3) 22-6. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · numerical
B= 22-4. Effective acceleration due to gravity is the
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q10 — medium · theory
is false.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q11 — medium · theory
Q ' Q 6 10–8
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q12 — medium · theory
[JEE-Main_090424_S1]
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · theory
A long straight wire with a circular The force acting on the charge particle is
A. B r2 (2) B r ✓ Correct
B. B r2 r
C. Both A and R are true and R is the correct
D. Both A and R are true but R is NOT the 10–5. What is fractional increase in the
Q14 — medium · theory
Two identical circular wires of radius 20 cm
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q15 — medium · theory
(1) 21-4. (1) 21-5. (4) 21-6. (1) 21-7. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q16 — medium · numerical
[���⃗���] = [r⃗ × F⃗] = [ML T ] F⃗ = iℓ⃗ × B⃗
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q17 — medium · theory
Paramagnetic substances: MAGNETIC EFFECT OF CURRENT AND MAGNETIC FORCE ON CHARGE OR CURRENT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q18 — medium · theory
MAGNETIC EFFECT OF CURRENT AND MAGNETIC FORCE ON CHARGE OR CURRENT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · numerical
A square loop of side 2.0 cm is placed inside approximately x . Find the value of x.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · theory
44 22-15. 2 22-16. 10 22-17. 3 21-8. 250
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · theory
A, C only
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · theory
Two capacitors are short circuited
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · theory
A current of 1.5 A is flowing through a 0
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q24 — medium · numerical
Parallel combination = 1008 pJ
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q25 — medium · theory
24-7. A long straight wire of radius a carries a
A. A, B, C, D (2) B, D Only magnetic induction at the centre of the coil by ✓ Correct
B. A, B, C Only (4) A, C Only the same current will be :
C. 2T (4) 16T
D. 2×10–4 N–m along positive Z-direction (1) 2% (2) 0.2%
Q26 — medium · theory
triangle, of side 9 cm each. The magnetic field 4xy
A. 3 × 10-7 T, Outside the plane of triangle (2) x2 y2 – (x y) ✓ Correct
B. 2 3 107 T, Outside the plane of triangle (3) 0xy x2 y2 – (x y)
C. 2 3 105 T, Outside the plane of triangle
D. 3 ×10–5 T, Outside the plane of triangle (4) 0xy x2 y2 (x y)
Q27 — medium · theory
(4) 24-7. (3) 23-1. (3) 23-2. (1) 22-1. (3)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · numerical
= 864 pJ
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · theory
(1) 22-8. (3) 22-9. (3) 22-10. (2) 22-11. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q30 — medium · numerical
������ 2������ = ������ MAGNETIC EFFECT OF CURRENT AND MAGNETIC FORCE ON CHARGE OR CURRENT
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D