Question:
A \(e^-\) when accelerated by \(V\) volts experiences a force \(F\) when it enters a uniform magnetic field. What will the force experience when it is accelerated by \(2V\) volts ?
A \(e^-\) when accelerated by \(V\) volts experiences a force \(F\) when it enters a uniform magnetic field. What will the force experience when it is accelerated by \(2V\) volts ?
Updated On: Jun 25, 2024
- \(F\)
- \(2F\)
- \(\frac {F}{2}\)
- \(\sqrt 2F\)
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The correct option is (D): \(\sqrt 2F\).
Was this answer helpful?
0
0
Top Questions on Magnetic Field
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Physics
- Magnetic Field
- In a uniform magnetic field of \(0.049 T\), a magnetic needle performs \(20\) complete oscillations in \(5\) seconds as shown. The moment of inertia of the needle is \(9.8 \times 10 kg m^2\). If the magnitude of magnetic moment of the needle is \(x \times 10^{-5} Am^2\); then the value of '\(x\)' is
- NEET (UG) - 2024
- Physics
- Magnetic Field
- A tightly wound \(100\) turns coil of radius \(10 cm\) carries a current of \( 7 A\). The magnitude of the magnetic field at the centre of the coil is (Take permeability of free space as \(4\pi×10^{-7}\) SI units):
- NEET (UG) - 2024
- Physics
- Magnetic Field
- An iron bar of length L has magnetic moment M. It is bent at the middle of its length such that the two arms make an angle 60° with each other. The magnetic moment of this new magnet is :
- NEET (UG) - 2024
- Physics
- Magnetic Field
- A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to :
A. hold the sheet there if it is magnetic.
B. hold the sheet there if it is non-magnetic.
C. move the sheet away from the pole with uniform velocity if it is conducting.
D. move the sheet away from the pole with uniform velocity if it is both, non-conducting and non-polar.
Choose the correct statement(s) from the options given below :- NEET (UG) - 2024
- Physics
- Magnetic Field
View More Questions
Questions Asked in JIPMER MBBS exam
- If same charge q is placed inside a sphere and cube having radius 1m and side 2m respectively. What will be the ratio of flux passing through them ?
- JIPMER MBBS - 2019
- Electric Flux
- \(BrO^{3-}\) Changes into \(Br_2\) in an acidic medium of a unbalanced equation how many electron should be present on the balanced electron.
- JIPMER MBBS - 2019
- Balancing a redox reaction
- If resistivity of copper is \(1.72×10^{-8} \Omega-m\) and number of free electron in copper is \(8.5×10^{28} / m^3\). Find mobility
- JIPMER MBBS - 2019
- Resistance and Resistivity
- If equilibrium constant is 2.6×108 then find the value of ΔG°.
- JIPMER MBBS - 2019
- Thermodynamics
- Level of LH is maximum :
- JIPMER MBBS - 2019
- Hormones
View More Questions