1.

How many electrons pass through a lampin 2minutes ?If current through it is 500mA.

Answer»

t=2min=120sec.

i=0.5A

we KNOW that ,q=it...,,and q=ne ALSO,,so n=it/e

n=0.5x120/1.6x10^-19=37.5x10^19e

hope it HELPS




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