Back to MAGNETIC EFFECT OF CURRENT

NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

1 Medium

1 of 1

Application +4 | -1

A charged particle moves undeflected in a region of crossed electric and magnetic fields. If the electric field is switched off, the particle has an initial acceleration a. If the magnetic field is switched off, instead of the electric field, the particle will have an initial acceleration

View answer and explanation

Correct option: C

Equal to a

Option C (Equal to a) is correct because the initial acceleration is determined by the electric field force, and when the magnetic field is switched off, the electric field force remains the same, resulting in the same acceleration.

More Questions from MAGNETIC EFFECT OF CURRENT

Practice All Chapter MCQs →

Which of the following statements is not true A current loop in a magnetic field Given below are two statements:
Statement (I): When currents vary with time, Newton’s third law is valid only if momentum carried by the electromagnetic field is taken into account.
Statement (II): Ampere's circuital law does not depend on Biot-Savart’s law.
In the light of the above statements, choose the correct answer from the options given below: The magnetic field due to current carrying a circular loop of radius

5 \mathrm{~cm}

at a point on the axis at a distance of

12 \mathrm{~cm}

from the center is

250 \mu \mathrm{T}

. The magnetic field at the center of the loop is The magnetic field

d \vec{B}

due to a small current element

d \vec{l}

\vec{r}

and element carrying current

i

is Three long straight conductors carry currents 4A, 2A and 3A into the plane of paper. A circular path is imagined to be enclosing these currents. The value of

\oint {\overrightarrow B .\overrightarrow {dl} }