How many electrons flow when a current of 5 amperes is passed through a conductor for 200 seconds?

Question

How many electrons flow when a current of 5 amperes is passed through a conductor for 200 seconds? (A) 6.241 × 1021 (B) 6.0241 × 1021 (C) 6.241 × 1022 (D) 6.0241 × 1022

Tardigrade Admin · Accepted Answer

Q=I t =5 × 200=1000 coulombs Charge carried by 1 electron =1.6 × 10-19 C ⇒ No. of electrons for 1000 C =(1000/1.6 × 10-19) =6.241 × 1021

Q. How many electrons flow when a current of $5$ amperes is passed through a conductor for $200$ seconds?

$6.241 \times 1 0^{21}$

$6.0241 \times 1 0^{21}$

$6.241 \times 1 0^{22}$

$6.0241 \times 1 0^{22}$

$Q = I t$

$= 5 \times 200 = 1000$ coulombs

Charge carried by 1 electron $= 1.6 \times 1 0^{- 19} C$

$\Rightarrow$ No. of electrons for $1000 C = \frac{1000}{1.6 \times 1 0 ^{- 19}}$

$= 6.241 \times 1 0^{21}$

Q. How many electrons flow when a current of 5 amperes is passed through a conductor for 200 seconds?

6.241×1021

6.0241×1021

6.241×1022

6.0241×1022