H2P-469

Field strength

H2 Physics · JC 2 · Medium · Field strength

A small sphere of charge

+2.0\,\text{nC}

and mass

2.5 \times 10^{-10}\,\text{kg}

is held stationary in a uniform vertical electric field. Take

g = 9.81\,\text{m s}^{-2}

. What is the strength

E

of the electric field?

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