Physics-Bar Magnet
NEET Physics Bar Magnet Match the Following Question
Type: Match the Following-match the column-Medium-Class 12
Match Column-I with Column-II.
Column-I Column-II (a) Torque on a bar magnet (i) m × B (b) Potential energy of a magnet (ii) –m . B (c) Magnetic moment of a solenoid (iii) n(2l)I(πa²) (d) Null point location (iv) Equal and opposite to Earth's field
Choose the correct matching:
A
a-i, b-ii, c-iii, d-iv
B
a-ii, b-i, c-iv, d-iii
C
a-iv, b-iii, c-ii, d-i
D
a-iii, b-iv, c-i, d-ii
Correct Answer
Option A
Detailed Explanation
The torque on a bar magnet in a magnetic field is given by the expression m × B, while the potential energy is given by –m . B. The magnetic moment of a solenoid is defined as n(2l)I(πa²), and the null point is located where the magnetic field due to the magnet is equal and opposite to the Earth's magnetic field.
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