two particles are separated by a distance
of 3m ; each exects and electric force of 1N
on the other. If one particle carries 10
times as much electric charges as the
other, what is the magnitude of the
Smaller charge ?
Answers
Explanation:
12th
Physics
Electric Charges and Fields
Problems Based on Coulomb's Law
Two particles with identica...
PHYSICS
Two particles with identical positive charges and a separation of 2.5×10
−2
m are released from rest. Immediately after their release, particle 1 has acceleration whose magnitude is 4×10
3
ms
−2
. Particle 1 has a mass of 9×10
−6
kg. Then each of the particle has charge of :
MEDIUM
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ANSWER
Force on particle 1 = mass X acceleration =9×10
−6
kg×4×10
3
ms
−2
=0.036 N
By Coulomb's law, this force =
4πεo
1
r
2
q
2
, where q is the charge on the particles and r is the distance between them (=2.5×10
−2
m).
∴
4πεo
1
r
2
q
2
=0.036 N
⇒9×10
9
×
2.5×10
−2
×2.5×10
−2
q
2
=0.036 N
⇒q=5×10
−8
C
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