How many electrons pass through a lamp in 3 minutes.If the current is 300 ma?

Answer 1

300 mA = 0.300 Amps.

1 Amp = 6.241*10^18 electrons/s.
0.300 Amps = 1.872*10^18 electrons/s.

1.872*10^18e/s. * 180s = 3.37*10^20 Electrons pass through in 3 minutes.