Question

During the 3.15 min a 4.90 A current is set up in a wire, how many coulombs pass through any cross section across the wire's width? Do not enter unit. Submit Answer) Tries 0/5 How many electrons pass through any cross section across the wire's width? (Submit Answer) Tries 0/5

Answer 1

Current through the wire = I = 4.9 A

Time period = T = 3.15 min = 3.15 x 60 sec = 189 sec

Charge passing through any cross-section of the wire = Q

Q = IT

Q = (4.9)(189)

Q = 926.1 C

Charge on an electron = e = 1.602 x 10^-19 C

Number of electrons passing through any cross-section of the wire = n

Q = ne

926.1 = n(1.602x10^-19)

n = 5.78 x 10²¹

a) Charge passing through any cross-section of the wire = 926.1 C

b) Number of electrons passing through any cross-section of the wire = 5.78 x 10²¹