1
NEET 2023
MCQ (Single Correct Answer)
+4
-1

A wire carrying a current $$I$$ along the positive $$\mathrm{x}$$-axis has length $$L$$. It is kept in a magnetic field $$\overrightarrow{\mathrm{B}}=(2 \hat{\mathrm{i}}+3 \hat{\mathrm{j}}-4 \hat{\mathrm{k}}) \mathrm{T}$$. The magnitude of the magnetic force acting on the wire is :

A
$$\sqrt{5} \mathrm{~IL}$$
B
$$5 \mathrm{~IL}$$
C
$$\sqrt{3}$$ IL
D
3 IL
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1

A very long conducting wire is bent in a semi-circular shape from $$A$$ to $$B$$ as shown in figure. The magnetic field at point $$P$$ for steady current configuration is given by :

NEET 2023 Physics - Moving Charges and Magnetism Question 3 English

A
$$\frac{\mu_{0} \mathrm{i}}{4 \mathrm{R}}$$ pointed away from the page
B
$$\frac{\mu_{0} \mathrm{i}}{4 \mathrm{R}}\left[1-\frac{2}{\pi}\right]$$ pointed away from page
C
$$\frac{\mu_{0} \mathrm{i}}{4 \mathrm{R}}\left[1-\frac{2}{\pi}\right]$$ pointed into the page
D
$$\frac{\mu_{0} \mathrm{i}}{4 \mathrm{R}}$$ pointed into the page
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

The shape of the magnetic field lines due to an infinite long, straight current carrying conductor is

A
a plane
B
a straight line
C
circular
D
elliptical
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Two very long, straight, parallel conductors A and B carry current of 5 A and 10 A respectively and are at a distance of 10 cm from each other. The direction of current in two conductors is same. The force acting per unit length between two conductors is : ($$\mu$$0 = 4$$\pi$$ $$\times$$ 10$$-$$7 SI unit)

A
1 $$\times$$ 10$$-$$4 Nm$$-$$1 and is repulsive
B
2 $$\times$$ 10$$-$$4 Nm$$-$$1 and is attractive
C
2 $$\times$$ 10$$-$$4 Nm$$-$$1 and is repulsive
D
1 $$\times$$ 10$$-$$4 Nm$$-$$1 and is attractive
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