Moving Charges and Magnetism - Result Question 28
28. A current carrying coil is subjected to a uniform magnetic field. The coil will orient so that its plane becomes
[1988]
(a) inclined at $45^{\circ}$ to the magnetic field
(b) inclined at any arbitrary angle to the magnetic field
(c) parallel to the magnetic field
(d) perpendicular to the magnetic field
Topic 2: Magnetic Field, Biot-Savart’s Law &
Ampere’s Circuital Law29. A long solenoid of $50 cm$ length having 100 turns carries a current of $2.5 A$. The magnetic field at the centre of the solenoid is : [2020] $(\mu_0=4 \pi \times 10^{-7} T m A^{-1})$
(a) $3.14 \times 10^{-4} T$
(b) $6.28 \times 10^{-5} T$
(c) $3.14 \times 10^{-5} T$
(d) $6.28 \times 10^{-4} T$
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Answer:
Correct Answer: 28. (d)
Solution:
- (d) The plane of coil will orient itself so that area vector aligns itself along the magnetic field.
So, the plane will orient perpendicular to the magnetic field.
