Question

please solve fast
Solve step-step ​

Answer 1

Step-by-step explanation:

Given:

Number of electrons = 10²¹ electrons

Time taken (t)= 4 mins = 240 s

\Large{\underline{\underline{\bf{To\:Find}}}}

ToFind

Current flowing through the conductor (I)

\Large{\underline{\underline{\bf{Solution:}}}}

Solution:

→ First we have to find the charge of the conductor.

→ By quantization of charges we know that

q = ne

where e = charge of an electron = 1.6 × 10⁻¹⁹ C

→ Substituting the datas we get,

q = 10²¹ × 1.6 × 10⁻¹⁹

q = 1.6 × 10² C

→ The current flowing through a conductor is given by

I = q/t

→ Substituting the datas we get

I = 1.6 × 10²/240

I = 0.67 ≈ 0.7 A

→ Hence current flowing through the conductor is 0.7 A

\boxed{\bold{Current=0.7\:A}}

Current=0.7A

→ Hence option d is correct.