A particle with a charge of 4.0 C has a mass of 5.0 x 10-3 kg....

Question

Question

A particle with a charge of 4.0 C has a mass of 5.0 x 10^-3 kg. What electric field directed upward will exactly balance the weight of the particle?

Answer 1

Answer #1

Electric force should be equal to its weight

F_e = F_g

qE = mg

E = mg/q

q = 4.0x 10^-6 C

m = 5.0 x 10^-3 kg

g = 9.81 m/s²

$E = \frac{\left ( 5.0\times 10^{-3} \right )\left ( 9.81 \right )}{4.0\times 10^{-6}}$

$E =12.26\times 10^{3} \; N/C$

Answer 2

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