1
NEET 2022 Phase 1
+4
-1

A square loop of side 1 m and resistance 1 $$\Omega$$ is placed in a magnetic field of 0.5 T. If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is

A
2 weber
B
0.5 weber
C
1 weber
D
Zero weber
2
NEET 2022 Phase 1
+4
-1

From Ampere's circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is

A
Uniform and remains constant for both the regions.
B
A linearly increasing function of distance upto the boundary of the wire and then linearly decreasing for the outside region.
C
A linearly increasing function of distance r upto the boundary of the wire and then decreasing one with $${1 \over r}$$ dependence for the outside region.
D
A linearly decreasing function of distance upto the boundary of the wire and then a linearly increasing one of the outside region.
3
NEET 2021
+4
-1
An infinitely long straight conductor carries a current of 5A as shown. An electron is moving with a speed of 105 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant. A
8 $$\times$$ 10$$-$$20 N
B
4 $$\times$$ 10$$-$$20 N
C
8$$\pi$$ $$\times$$ 10$$-$$20 N
D
4$$\pi$$ $$\times$$ 10$$-$$20 N
4
NEET 2020 Phase 1
+4
-1
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 :
$$\left( {{\mu _0} = 4\pi \times {{10}^{ - 7}}Tm{{A}^{-1}}} \right)$$
A
3.14 $${ \times {{10}^{ - 4}}T}$$
B
6.28 $${ \times {{10}^{ - 5}}T}$$
C
3.14 $${ \times {{10}^{ - 5}}T}$$
D
6.28 $${ \times {{10}^{ - 4}}T}$$
NEET Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
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