If the distance between two point charges its increased b...
If the distance between two point charges its increased by a factor of four, the magnitude of the electrostatic force between them will be
1/4 of its former value
1/16 of its former value
1/2 of its former value
4 times its former value
Correct answer is B
For the two point charges, the magnitude of the electrostatic force between them is given by the equation:
F ∝ 1/r2, and if the distance is increased by a factor of 4, that is new distance = 4r,
then, new force F ∝ 1/(4r)2
= ∝ 1/16r2
Thus it will be 1/16 of the former value
When temperature of a liquid increases, its surface tension ...
Lines of force I. Begin and end on equal and opposite electric charges. II. are in state of ten...
The density P of a spherical ball of diameter d and mass m is given by ...
Which of the following statements about liquid pressure is NOT correct? The pressure ...
When impurities are added to semi-conductors, the conductivity of the semi-conductor ...