Question

Find the number of electrons
flowing through the conductor
in 15 seconds, if 100 V of
potential difference is applied
through a conductor of
resistance 20 Ohm. *​

Answer 1

Answer:

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Answer 2

Answer:

P.D = Current × Resistance

100V = I × 20

I = 100/20 A

I = 5 A

Now, Charge = Current * Time

Charge = 5 × 15 C

Charge = 75 C

Now 1 C = 6.25 × 10^18 electrons

• 75C contains 75× 6.25× 10^18 = 468.75 × 10^18 = 4.6875 ×10^20 electrons
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