1.

Please solve fastSolve step-step ​

Answer»

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.


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