Question: A 5 8 0 - mm long tungsten wire, with a 0 . 0 4 6 - mm - diameter circular cross section, is wrapped

580 -

mm long tungsten wire, with a

0.046 -

-

diameter circular cross section, is wrapped around in the shape of a coil and used as a filament in an incandescent light bulb. When the light bulb is connected to a battery, a current of

0.526

A is measured through the filament.

(

Note: tungsten has a resistivity of

4.9 10 - 8

.)

Part A

How many electrons pass through this filament in

5

seconds?

Part B

What is the resistance of this filament?

Part C

What is the voltage of the battery that would produce this current in the filament?

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