A billion(109) electrons flow over a period of 1µs from a to b in the wire shown below. determine the average current i1 over that period bojective auestion
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∵ current = charges flow /time taken
Number of electrons flow = 1 billion = 10⁹
so, charges flow = 1.6 × 10⁻¹⁹ × 10⁹ = 1.6 × 10⁻¹⁰ C
Time taken = 1μs = 10⁻⁶ sec
Now, current = 1.6 × 10⁻¹⁰/10⁻⁶ = 1.6 × 10⁻⁴ A
Number of electrons flow = 1 billion = 10⁹
so, charges flow = 1.6 × 10⁻¹⁹ × 10⁹ = 1.6 × 10⁻¹⁰ C
Time taken = 1μs = 10⁻⁶ sec
Now, current = 1.6 × 10⁻¹⁰/10⁻⁶ = 1.6 × 10⁻⁴ A
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