Question

a current flow of ten ampere in one hour through the cross section of conductor. what is the amount of charge. what is the number of electrons passes through the conductor

Answer 1

current = The amount of flow of charges through a conductor(or any material which gives current to flow) with time is called current .

current = I = 10A
time = t = 1hr = 3600s
amount of charge = Q = ?
number of electrons = n = ?

I = Q/t
Q = It
Q = 10A×3600s
Q = 36000C

charge of one electron = e– = 1.6×10^-19C

Q = ne–
36000 = n × 1.6×10^-19
36×10³/1.6×10^-19 = n
22.5 × 10^3-(-19) = n
22.5 × 10^3+19 = n
22.5 ×10^22 = n
2.25 × 10^23 = n

Answer 2

I = 10A
Q = ?
t = 1hr = 3600

I = Q/t
Q = It
Q = 10×3600
Q = 36000 Coulomb/Seconds



The charge on one electron (e) = 1.6×10^-19

No of electrons will be -
ne = C(coulomb)
(n= number of electrons)
(e = charge of one electron)

n = C/e


n = 36000/1.6×10^-19
n = 36 × 1000/1.6×10^-19
n = 36 / 1.6×10^-19 × 10^-3
n = 36/ 1.6×10^-22
n = 22.5×10^22
n = 2.25×10^23


Hope it helps