Home
Class 12
PHYSICS
An electron at rest has a charge of 1.6 ...

An electron at rest has a charge of `1.6 × 10^(–19) C.` It starts moving with a velocity v = c/2, where c is the speed of light, then the new charge on it is -

A

`1.6xx10^(-19)` Coulomb

B

`1.6xx10^(-19)sqrt(1-(1/2)^(2))` Coulomb

C

`1.6xx10^(-19)sqrt((1/2)^(2)-1)` Coulomb

D

`(1.6xx10^(-19))/(sqrt(1-(1/2)^(2)))` coulomb

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS - I

    MOTION|Exercise EXERCISE - 1 (Section B)|10 Videos

  • ELECTROSTATICS - I

    MOTION|Exercise EXERCISE - 1 (Section C)|8 Videos

  • ELECTROSTATICS - I

    MOTION|Exercise EXERCISE - 4 (Level -II) PREVIOUS YEAR - JEE ADVANCED|13 Videos

  • ELECTROSTATICS

    MOTION|Exercise Exercise -3 Section (B) Previous Year Problems | JEE Main|30 Videos

  • ELECTROSTATICS-II

    MOTION|Exercise Exercise - 4 (Level - II)|30 Videos

Similar Questions

Explore conceptually related problems

The percentage increase in the rest mass of an electron when it is moving at a speed of 0.6 c where c is the speed of light, is

If v= velocity of a body c= speed of light Then, the dimension of v/c is

An electron , with charge of -1.60 xx 10^(19) C , accelerates from rest through a potential difference V. A proton , with a charge of + 1.60 xx 10^(-19) C , accelerates from rest through a potential difference -V . Is the final speed of the electron (a) more than , (b) less than , or (c ) same as the final speed of the proton ?

If the electronic charge is 1.6 xx 10^(-19) C, then the number of electrons passing through a section of wire per second, when the wire carries a current of 2A, is

An electron is constrained to move along the y- axis with a speed of 0.1 c (c is the speed of light) in the presence of electromagnetic wave, whose electric field is vec E = 30hat j sin (1.5 xx 10^7t - 5 xx 10^2x) V//m . The maximum magnetic force experienced by the electron will be : (given c = 3 xx 10^8 ms^(-1) and electron charge = 1.6 xx 10^(-19)C )

An electron carrying a charge of 1.6xx10^(-19)C revolves in a circle at 10^(16) revolutions per second. The equivalent current is

An ebonite rod acquires a negative charge of 3.2 xx 10^(-10) C. The number of excess electrons it has is given by

The number of electrons in 1.6 C charge will be