A Particle with a Charge Of $+ 4.0 \mu \mathrm { C }$

Multiple Choice

A particle with a charge of $+ 4.0 \mu \mathrm { C }$ has a mass of $5.0 \mathrm {~g}$ . What magnitude electric field directed upward will exactly balance the weight of the particle?

A) $4.4 \times 10 ^ { 4 } \mathrm {~N} / \mathrm { C }$
B) $5.1 \times 10 ^ { 4 } \mathrm {~N} / \mathrm { C }$
C) $1.2 \times 10 ^ { 4 } \mathrm {~N} / \mathrm { C }$
D) $4.1 \times 10 ^ { 4 } \mathrm {~N} / \mathrm { C }$
E) $8.2 \times 10 ^ { 4 } \mathrm {~N} / \mathrm { C }$