Select Question Set:
Q. No.A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron:
1.
will turn towards right of direction of motion
2.
will turn towards left of direction of motion
3.
speed will decrease
4.
speed will increase
Subtopic: Lorentz Force |
65%
From NCERT
NEET - 2023
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A long straight wire of length \(2\) m and mass \(250\) g is suspended horizontally in a uniform horizontal magnetic field of \(0.7\) T. The amount of current flowing through the wire will be:
(\(g=9.8~\text{ms}^{-2}\))
1. \(2.45\) A
2. \(2.25\) A
3. \(2.75\) A
4. \(1.75\) A
(\(g=9.8~\text{ms}^{-2}\))
1. \(2.45\) A
2. \(2.25\) A
3. \(2.75\) A
4. \(1.75\) A
Subtopic: Lorentz Force |
79%
From NCERT
NEET - 2023
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A wire carrying a current \(I\) along the positive \(x\)-axis has length \(L\). It is kept in a magnetic field \(\overrightarrow{B}=(2 \hat{i}+3 \hat{j}-4 \hat{k})~\text{T}\). The magnitude of the magnetic force acting on the wire is:
1. \(\sqrt{3}IL\)
2. \(3IL\)
3. \(\sqrt{5}IL\)
4. \(5IL\)
1. \(\sqrt{3}IL\)
2. \(3IL\)
3. \(\sqrt{5}IL\)
4. \(5IL\)
Subtopic: Lorentz Force |
64%
From NCERT
NEET - 2023
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A circular coil \(ABCD\) carrying a current \(i\) is placed in a uniform magnetic field. If the magnetic force on the segment \(AB\) is \(\vec{ F},\) then the force on the remaining segment \(BCDA\) is:
1. \(-\vec{F}\)
2. \(3\vec{F}\)
3. \(-3\vec{F}\)
4. \(\vec{F}\)
1. \(-\vec{F}\)
2. \(3\vec{F}\)
3. \(-3\vec{F}\)
4. \(\vec{F}\)
Subtopic: Current Carrying Loop: Force & Torque |
75%
From NCERT
NEET - 2013
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Two parallel, long wires are kept \(0.20~\text m\) apart in a vacuum, each carrying current of \(x ~\text A\) in the same direction. If the force of attraction per meter of each wire is \(2 \times 10^{-6} ~\text N,\) then the value of \(x \) is approximately:
1. \(1\)
2. \(2.4\)
3. \(1.4\)
4. \(2\)
1. \(1\)
2. \(2.4\)
3. \(1.4\)
4. \(2\)
Subtopic: Force between Current Carrying Wires |
75%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Two very long, straight, parallel conductor \(\mathrm{A}\) and \(\mathrm{B}\) carry current of \(5~\text{A}\) and \(10~\text{A}\) respectively and are at a distance of \(10~\mathrm{cm}\) from each other. The direction of the current in the two conductors is the same. The force acting per unit length between two conductors is:
(\(\mu_0=4\pi \times 10^{-7}\) SI unit)
(\(\mu_0=4\pi \times 10^{-7}\) SI unit)
| 1. | \(2\times10^{-4}~\text{Nm}^{-1}\) and is attractive |
| 2. | \(2\times10^{-4}~\text{Nm}^{-1}\) and is repulsive |
| 3. | \(1\times10^{-4}~\text{Nm}^{-1}\) and is attractive |
| 4. | \(1\times10^{-4}~\text{Nm}^{-1}\) and is repulsive |
Subtopic: Force between Current Carrying Wires |
75%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The shape of the magnetic field lines due to an infinite long, straight current carrying conductor is:
1. a straight line
2. circular
3. elliptical
4. a plane
1. a straight line
2. circular
3. elliptical
4. a plane
Subtopic: Magnetic Field due to various cases |
72%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The magnetic field near a current-carrying conductor is given by:
| 1. | Coulomb's law | 2. | Lenz's law |
| 3. | Biot-Savart law | 4. | Kirchoff's law |
Subtopic: Biot-Savart Law |
94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
A long solenoid carrying a current produces a magnetic field \(B\) along its axis. If the current is doubled and the number of turns per cm is halved, then the new value of the magnetic field will be equal to:
1. \(B\)
2. \(2B\)
3. \(4B\)
4. \(\dfrac B 2\)
1. \(B\)
2. \(2B\)
3. \(4B\)
4. \(\dfrac B 2\)
Subtopic: Ampere Circuital Law |
91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
| Assertion (A): | In a uniform magnetic field, speed and energy remain the same for a moving charged particle. |
| Reason (R): | Moving charged particle experiences a magnetic force perpendicular to its direction of motion. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Lorentz Force |
68%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.