In a medium the force of attraction between two point electric charges, distance r apart, is F. What distance apart should these be kept in the same medium so that the force between them becomes 3F?

r/3

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r/4

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Solution

The correct option is C

When two point electric charges kept at a distance r then force 'F' between them is

If the force between two point charges becomes 3F, let they kept apart at distance r' then,

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In a medium the force of attraction between two point electric charges, distance r apart, is F. What distance apart should these be kept in the same medium so that the force between them becomes 3F?

The correct option is C When two point electric charges kept at a distance r then force 'F' between them is If the force between two point charges becomes 3F, let they kept apart at distance r' then,

The correct option is C

When two point electric charges kept at a distance r then force 'F' between them is

If the force between two point charges becomes 3F, let they kept apart at distance r' then,