**Part A**

Current:

$\overline{){\mathbf{i}}{\mathbf{=}}\frac{\mathbf{V}}{{\mathbf{R}}_{\mathbf{e}\mathbf{q}}}}$

For resistors in series:

$\begin{array}{rcl}{\mathbf{R}}_{\mathbf{e}\mathbf{q}}& \mathbf{=}& {\mathbf{R}}_{\mathbf{1}}\mathbf{+}{\mathbf{R}}_{\mathbf{2}}\\ & \mathbf{=}& \mathbf{400}\mathbf{+}\mathbf{800}\end{array}$

R_{eq} = 1200Ω

Two light bulbs have resistances of 400 Ω and 800 Ω

Part A

The two light bulbs are connected in series across a 120- V line. Find the current through each bulb.

Enter your answers numerically separated by a comma.

I_{400}, I_{800} =______A

Part B

Find the power dissipated in each bulb.

P_{400}, P_{800} =________W

Part C

Find the total power dissipated in both bulbs.

P =______W

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What scientific concept do you need to know in order to solve this problem?

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