Question

What is the net charge on a conducting sphere of radius 10cm?Given that the electric field 15 cm from the centre of
the sphere is equal to
3 x 103 N/C and is directed inward
(1) -7.5 * 10-5C 1 -7.5 × 10-9 C
(3) 7.5 × 10-5 C (4) 7.5 × 10-9 C
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Answer 1

Answer:

option 2 is correct

Explanation:

electric field outside conductor is kQ/R^2 equate it with the electric field and find out q since electric field is directed inside negative sign comes