GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A conducting sphere has a net charge of-6.4 × 10-17C. What is the approximate number of excess electrons on the sphere?
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100
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200
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300
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400
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Explanation:
Detailed explanation-1: -So, there are 300 excess electrons on the sphere .
Detailed explanation-2: -Therefore, the net charge on the sphere is 6.67 nC.
Detailed explanation-3: -Gauss’ law tells us that the electric field inside the sphere is zero, and the electric field outside the sphere is the same as the field from a point charge with a net charge of Q. This result is true for a solid or hollow sphere. So we can say: The electric field is zero inside a conducting sphere.
Detailed explanation-4: -The electric field due to a charged conducting or of radius 10 cm, at a distance of 20 cm from the com of the sphere is 1.5 x 10° N C and points radial inwards. What is the charge on the sphere? Ans.-6.67 nC.
There is 1 question to complete.