Home
Class 12
PHYSICS
A proton moving with a constant velocity...

A proton moving with a constant velocity passes through a region of space without any changing its velocity. If `E` and `B` represent the electric and magnetic fields, respectively. Then, this region of space may have

A

`E=0, B=0`

B

`E=0, B!=0`

C

`E!=0, B=0`

D

`E!=0, B!=0`

Text Solution

Verified by Experts

The correct Answer is:
(a,b,d)
There is no change in velocity. It can be possible when electric and magnetic field are absent, i.e., `E=0, B=0`.
Or when electric and magnetic fields are present but force due to electric field is equal and opposite to the due to magnetic
field, (i.e.,`E!=0 B!=0`).
Or when `E=0` but `B!=0`.
`F=q upsilonB sin theta` i.e.,
`sin theta=0`, i.e., `theta=0 implies upsilon` and B are in the same direction.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Archives Comprehension|2 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Archives Integer|1 Videos

  • MAGNETIC FIELD AND MAGNETIC FORCES

    CENGAGE PHYSICS ENGLISH|Exercise Archives Single Correct|18 Videos

  • INDUCTANCE

    CENGAGE PHYSICS ENGLISH|Exercise Concept Based|8 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS ENGLISH|Exercise True and False|3 Videos

Similar Questions

Explore conceptually related problems

A particle having charge q moves with a velocity v through a region in which both an electric field vecE and a magnetic field B are present. The force on the particle is

A proton beam passes without deviation through a region of space where there are uniform transverse mutually perpendicular electric and magnetic field with E and B Then the beam strikes a grounded target. Find the force imparted by the beam on the target if the beam current is equal to I .

A beam of electrons is moving with uniform velocity in a region having transverse uniform electric and magnetic field of strength. 100 V/m and 0.1 T respectively at right angles to the direction of beam. The velocity of the electrons is

An electron does not suffer any deflection while passing through a region of uniform magnetic field. What is the direction of the magnetic field ?

A charged particle of specific charge s moves undeflected through a region of space containing mutually perpendicular and uniform electric and magnetic fields, E and B. When the field E is switched off, the particle will move in a circular path of radius

A charged particle of specific charge s moves undeflected through a region of space containing mutually perpendicular and uniform electric and magnetic fields, E and B. When the field E is switched off, the particle will move in a circular path of radius

Can an object have (1) a constant velocity even through its speed is changing (2) a constant speed even through its velocity is changing ?

A particle of charge q and velocity v passes undeflected through a space with non-zero electric field E and magnetic field B. The undeflecting conditions will hold, if

If an electron is not deflected in passing through a certain region of space can we be sure that there is no magnetic field in that region?

(A) : If an electron is not deflected while passing through a certain region of space, then only possibility is that there is no magnetic field in this region (R) : Force on an electron moving in a magnetic field is inversely proportional to the magnetic field applied.

Home
Profile