MacBook Air (A) Towards the charge ) Away fhom the charge (C) An electric ?eld h

Question

MacBook Air (A) Towards the charge ) Away fhom the charge (C) An electric ?eld has no direction 19. Fros the sketch of the field lines shown in Pigure 1, determine the ratio &4 (inctuding the sign) Figure 1: Electric Field lines of a pair of charges QA and Q 18 13 18 18 (A) 13 20. Determine the signs of each of the three charges shown in Figure 2 (A) All three charges are positive. (B) All three charges are negative. (C) A is negative, while B and C are positive. (D) A is positive, while B and C are negative (E) A and B are positive, while C is negative Figure 2: Electric Field lines of three charg

Explanation / Answer

19.

Electric field density indicate the magnitude of charge and from the diagram it's clear that electric field is denser at charge B, hence we can conclude that charge of B is greater than A.

Also as the electric field lines terminating at B , it means charge B is negative charge.

So their ratios must be negative and as charge B is greater than A so ratio must be smaller than 1.

Hence option (d) is correct.

Comment in case any doubt..goodluck

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