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JEE PHYSICS MCQ: ELECTRIC FIELDS AND CHARGES

1 Medium

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Application +4 | -1

If the electric field near the earth's surface be

300 \mathrm{~V} / \mathrm{m}

directed downwards, then the surface density of charge on earth's surface is

View answer and explanation

Correct option: C

2.6 \times 10^{-9} \mathrm{C} / \mathrm{m}^2

Option C (

2.6 \times 10^{-9} \mathrm{C} / \mathrm{m}^2

) is correct because it's calculated using the formula relating electric field and surface charge density:

E = \sigma / \varepsilon_0

.

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