What net force acts on a positive charge of 4mC at a point where the electric field strength is 400 N/C?
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Whats mC?
What equation do I use? E=kq/r^2?
2007-04-09 19:12:30 · 3 answers · asked by Keshawn 1 in Science & Mathematics ➔ Physics
mC stands for milli Coulomb. I suggest brushing up on decimal prefixes and suffixes.
as far as electrostatic force goes, you can just use
F = E * q
so force = 400 * 4 *10^-3 = 1.6 N
2007-04-09 19:20:41 · answer #1 · answered by NArchy 3 · 0⤊ 0⤋
mC is milli coulombs = 10^-3 coulomb
The force is 400 newton/coulomb. You just multiply the no of coulombs by 400 to get the force. F = 400*4*10^-3 N
It could also be micro coulomb, but that is usually spelled µC.
2007-04-10 02:22:19 · answer #2 · answered by gp4rts 7 · 0⤊ 1⤋
F= Eq
mC = micro coulomb..... x10^ -6
so basically 400x4x10^-6
et voila!
2007-04-10 02:22:51 · answer #3 · answered by elucidiamia 2 · 0⤊ 0⤋