1
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

Magnetic moment of bar magnet is $$2 M$$. The work done to turn the magnet by $$90^{\circ}$$ of magnet in direction of magnetic field $$B / 2$$ will be

A
zero
B
$$\frac{M B}{2}$$
C
2MB
D
MB
2
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

If the B - H curves of two samples of X and Y of iron are as shown below, then which one of the following statement is correct?

BITSAT 2022 Physics - Magnetism and Matter Question 2 English

A
Both X and Y are suitable for making electromagnets.
B
Both X and Y are suitable for making permanent magnet.
C
X is suitable for making permanent magnet and Y for making electromagnet.
D
X is suitable for making electromagnet and Y is suitable for permanent magnet.
3
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1

A long cylindrical iron core of cross-sectional area 5 cm2 is inserted into a long solenoid having 4000 turns/meter and carrying a current 5 A. The magnetic field inside the core is $$\pi$$ T. Find the pole strength developed.

A
1000 A-m
B
1240 A-m
C
882 A-m
D
760 A-m
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