Points How would you change the distance between two positively charged particles
to increase the electric potential energy by a factor of 4?
A. Reduce the distance by a factor of 16.
OOO
B. Increase the distance by a factor of 16.
C. Reduce the distance by a factor of 4.
O
D. Increase the distance by a factor of 4.

Reduce the distance by a factor of 4.

Explanation:

The electric potential energy between two charged particle is given by :

k is electric constant

r is distance between two positively charged particles

Electric potential energy is inversely proportional to the distance between charges. If we decrease the distance between charges by a factor of 4, the electric potential energy will increase by an factor of 4.

Hence, the correct option is (C).

answer///isobars;

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.