Home
Class 12
PHYSICS
A2 μC charge and a-0.01 mC are kept at a...

A2 μC charge and a-0.01 mC are kept at a distance of 30 cm from each other. The force between them will be.

A

5 N

B

2 N

C

3 N

D

4 N

Text Solution

Verified by Experts

The correct Answer is:
B
Given `q_1 = 2xx 10^(-6)`C
`q_2 = - 0.01 xx 10^(-3) C and r = 0.3` m
We have `F = 9 xx 10^(9) xx (q_1 q_2)/( r^2)`
`F = (9 xx 10^9 xx 2 xx 10^(-6) xx ( - 0.01 xx 10^(-3) ) )/( (0.3)^2)`
`F = -2 N`
Promotional Banner

Similar Questions

Explore conceptually related problems

A non conducting spherical shell of diameter 10 cm has a charge of 1.6 xx 10^(-4)C . A charge of 20 C is placed at a distance of 10 cm from its centre, then force between them will be :-

Two protons are a distance of 1 xx 10^(-10) cm from each other. The force acting on them are

Two ball with charges 5muC and 10muC are at a distance of 1 m from each other. In order to reduce the distance between them to 0.5 m , the amount of work to be performed is

Two charges of values 2 muC and -50 muC are placed at a distance of 6 cm from each other. The distance of the point (in cm) from the bigger charge where the electric intensity will be zero is :

Two point charge Q and 4Q are fixed at a distance of 12cm from each other. Sketch lines of force and locate the neutral point, if any .

A total charge Q is broken in two parts Q_(1) and Q_(2) and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when

Two point charges , -2muC and +6muC are fixed on a table at a distance 10 cm from each other. Where should the third charge be placed so that no net force acts on it ?

Two points charges q_1 and q_2 are placed at a distance of 50 m from each each other in air, and interact with a certain force. The same charges are now put in oil whose relative permittivity is 5. If the interacting force between them is still the same, their separation now is