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What is the force between two small char...

What is the force between two small charged spheres having charges of ` 2xx10^(-7) `C and `3xx10^(-7) ` C placed 30 cm apart in air?

Text Solution

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Here `q_1 =2xx10 ^(-7)C, q_2 =3xx10 ^(-7) C, r = 30 cm = 0.3 `
`therefore ` Force in air ` F= (1)/( 4pi in _0) .(q_1q_2)/( r^(2)) =(9xx 10 ^(9) xx2 xx 10 ^(-7) )/( (0.3) ^(2)) =6xx 10 ^(-3) N`
The force is repulsive in nature.
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