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A circular ring carries a uniformly dist...

A circular ring carries a uniformly distributed positive charge and lies in the xy plane with center at the origin of the cooredinate system. If at a point (0,0,z) the electric field is E, then which of the following graphs is correct?

A

B

C

D

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The correct Answer is:
B
At Z = 0, E = 0 and between Z = 0 and `Z=oo` and E grows to a maximum value which can be found by `(dE)/(dt)=0`. Also, graph (b) should be symmetric, which is (b).
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROSTATICS-PRACTICE EXERCISE (Exercise 2 (MISCELLANEOUS PROBLEMS))
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