First slide

Electric charges and its properties

Question

When $10^{14}$ electrons are removed from a neutral metal sphere, the charge on the sphere becomes

Easy

A

$16 μC$
B

$- 16 μC$
C

$32 μC$
D

$- 32 μC$

Solution

$Q = ne = 10^{14} \times 1 .6 \times 10^{- 19} \Rightarrow Q = 1 .6 \times 10^{- 5} C = 16 μC$
Electrons are removed, so charge will be positive.

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