Question

if a current of 1.6A flows through a conducting wire for 2 second. Calculate the no of electron passing through wire.​

Answer 1

AnswEr :

• Current = 1.6 A
• Time = 2s

Quantisation of charge : According to it, electrons can be transferred only in whole number ratios. Formula for quantisation of charge is : Q = ±ne

$\longrightarrow \tt{I\ =\ \dfrac{Q}{t}} \\ \\ \\ \longrightarrow \tt{1.6\ =\ \dfrac{Q}{2}} \\ \\ \\ \longrightarrow \tt{Q\ =\ 1.6\ \times\ 2} \\ \\ \\ \longrightarrow \underline{\boxed{\frak{Q\ =\ 3.2\ C}}}$

Now, we've to calculate no of electrons passing through wire (using formula for quantisation of charges)

$\longrightarrow \tt{Q\ =\ \pm ne} \\ \\ \\ \longrightarrow \tt{n\ =\ \dfrac{Q}{e}} \\ \\ \\ \longrightarrow \tt{n\ =\ \dfrac{3.2}{1.6\ \times\ 10^{-19}}} \\ \\ \\ \longrightarrow \tt{n\ =\ \dfrac{3.2\ \times\ 10^{19}}{1.6}} \\ \\ \\ \longrightarrow \underline{\boxed{\frak{n\ =\ 2\ \times\ 10^{19}\ e}}}$

Answer 2

Answer:

Answer referred to the attachment

Hope this helps you