Fig.1 shows the variation of electric potential V with `1//r`, where r is the distance from the two charges `Q_(1) and Q_(2)`. Determine (i) signs of two charges `Q_(1) and Q_(2)` (ii) Which of the two charges has a larger magnitude ? Justify.

Fig.1 shows the variation of electric potential V with `1//r`, where r

1.	Fig.1 shows the variation of electric potential V with `1//r`, where r is the distance from the two charges `Q_(1) and Q_(2)`. Determine (i) signs of two charges `Q_(1) and Q_(2)` (ii) Which of the two charges has a larger magnitude ? Justify.
Answer» Electric potential due to a point charge Q at a point distance r from the charge is `V = (Q)/(4pi in_(0) r)` V is `+` only when Q is `+`. Therefore from fig. `Q_(1)` is `+ Q_(2)` is negative . For a given value of r, we find from Fig that `V_(2) gt V_(1)` `Q_(2) gt Q_(1)`

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Fig.1 shows the variation of electric potential V with `1//r`, where r is the distance from the two charges `Q_(1) and Q_(2)`. Determine (i) signs of two charges `Q_(1) and Q_(2)` (ii) Which of the two charges has a larger magnitude ? Justify.

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