When a lightbulb is turned on...

Question

When a lightbulb is turned on, 8.85C of charge pass through the filament of the bulb in 17.0s. 

a) What is the average current in the lightbulb?

---A

b) How many electrons pass through the filament in 8.5 s?

--- electrons 

Answer 1

a) I = Q/s = 8.85C / 17s

 

I = 0.5206 C/s = 0.5206 A

 

b) (0.5206 C/s)(1 electron / 1.6X10^-19C)(8.5s) = 2.766X10^19 electrons