u=Q²/2c change the subject of the formula for Q
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Answer:
Answer is C.
Coulomb's law describes the magnitude of the electrostatic force between two electric charges. The Coulomb's law formula is given as follows.
The force between 2 charges q
1
and q
2
is given by the formula F=k
r
2
q
1
×q
2
.
Where, q
1
: Charge of object 1
q
2
: Charge of object 2
r: Distance between the two objects
F: Force between the two objects. A positive force implies a repulsive interaction, while a negative force implies an attractive interaction
k: Coulomb Constant.
In this case, the distance between 2 charges is halved. So the new force becomes F
new
=k
(
2
r
)
2
q
1
×q
2
=
r
2
4×k×q
1
×q
2
=4F.
Hence, the force between the charges becomes 4F.
Step-by-step explanation:
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