Two point like charges Q1 and Q2 of whose strength are equal in absolute value are placed at a certain distance from each other. Assuming the field strength to be posiive in the positive direction of x -axis the signs of the charges Q 1 and Q2 for the graphs (field strength versus distance) shown in Figures 1 , 2 , 3 and 4 are

Question

Two point like charges Q1 and Q2 of whose strength are equal in absolute value are placed at a certain distance from each other. Assuming the field strength to be posiive in the positive direction of x -axis the signs of the charges Q 1 and Q2 for the graphs (field strength versus distance) shown in Figures 1 , 2 , 3 and 4 are, Q1 positive, Q2 negative; both positive; Q1 negative, Q2 positive; both negative, Q1 negative, Q2 positive;Q1 positive, Q2 negative; both positive; both negative, Q1 positive, Q2 negative; both negative; Q1 negative, Q2 positive; both positive, Both positive; Q1 positive, Q2 negative; Q1 negative, Q2 positive; both negative

MARKS App · Accepted Answer

For a point charge, E ∝ x 2 1 ​ . For positive charges, electric field will decrease in positive direction as distance increases, (case 1 ), for negative charge, as distance increases field will increase (case 4). As we move from positive charge to negative charge, field will keep on decreasing (case 2 ), As we move from negative to positive charge, field will keep on increasing (case 3 )

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