Question

3. An electron at rest has a charge of 1.6x10-'9C. If it moves with 70% of the speed of light
then its charge will be
1) less than 1.6x10-1°C 2) greater than 1.6x10°C 3) equal to 1.6 x10°C 4) infinity​

Answer 1

change will be

grater than 1.6X10°C

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Answer 2

The charge of the electron will be: (3) equal to 1.6 x 10⁻¹⁹ C.

- This is the actual charge on an electron.

- The charge on an electron does not depend upon its speed.

- No matter how fast the electron is moving, its charge will not be affected by it.

- Only its mass will vary with its velocity.

- Hence, the charge will be equal to 1.6 x 10⁻¹⁹ C.

- So, the correct answer is option (3).