MHT CET Physics question
Two charged concentric spheres have radii of 10 cm and 14 cm. Charge on the inner sphere is C and that on the outer sphere is C. If Electric field at r = 14 cm is and at r = 18 cm is , then equal to
Answer: (B)
Solution
At r = 14 cm (on the outer shell) the field is taken as that due to the inner sphere only, ; at r = 18 cm both charges act, $
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