KCET 2020 Physics Solved Paper

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Question : 42 of 60
 
Marks: +1, -0
The electric field lines on the left have twice the separation on those on the right as shown in figure. If the magnitude of the field at A is 40 𝑉𝑚1, what is the force on 20 𝜇𝐶 charge kept at B?
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