Practicing Success
Practicing Success
CUET Preparation Today
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Electric Field near earth's surface is given by $E = \frac{\sigma}{\epsilon_0}$ $\Rightarrow \sigma = \epsilon_0 E$ Charge $Q = \sigma \times 4\pi R^2 = \epsilon_0 E\times 4\pi R^2 = -680kC$. Charge is negative because electric field is inwards. |
