ElectrostaticsHard
Question
Two point charges a & b, whose magnitudes are same are positioned at a certain distance from each other with a at origin. Graph is drawn between electric field strength at points between a & b and distance x from a. E is taken positive if it is along the line joining from a to b. From the graph, it can be decided that
Options
A.a is positive, b is negative
B.a and b both are positive
C.a and b both are negative
D.a is negative, b is positive
Solution
a & b can′t be both +ve or both − ve otherwise field would have been zero at their mid point. b can′t be positive even, otherwise the field would have been in −ve direction to the right of mid point answer is (a)
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