An electric charge of 12 C passed through the cross-section of the conductor in 20 s. Find: a) the time interval

An electric charge of 12 C passed through the cross-section of the conductor in 20 s. Find: a) the time interval during which a charge of 15 C will pass through the cross-section of the conductor b) the current in the conductor

Initial data: t1 (the first duration of the movement of the electric charge) = 20 s; q1 (initial charge) = 12 C; q2 (second charge) = 15 C.

a) The duration of passage through the used conductor of the charge in 15 C: q1 / t1 = I = q2 / t2, whence t2 = q2 * t1 / q1 = 15 * 20/12 = 25 s.

2) Current in the used conductor: I = q1 / t1 = 12/20 = 0.6 A.

Answer: A charge of 15 C will pass through the used conductor in 25 seconds; the current is 0.6 A.