Question

Charge is accumulation of

Answer 1

Answer:

When a current flows through a contact between two metals of different conductivities, a charge accumulated in the vicinity of the contact. The charge accumulation is linearly proportional to the current. The charge accumulated in a region, which thickness approximately equals to the mean-free path in the metal.

Explanation:

Answer 2

Explanation:

When a current flows through a contact between two metals of different conductivities, a charge accumulated in the vicinity of the contact. The charge accumulation is linearly proportional to the current. The charge accumulated in a region, which thickness approximately equals to the mean-free path in the metal