Physics

What happens when you plug more equipment into apower board in terms of it's resistance and current. Explain.

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  1. Plugging another appliance or resistor into a "power board" is like adding another resistor in parallel. The total current that the power board provides goes up, and the effective resistance that it is connected to (V/I) goes down.

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  2. An electric hair dryer has a power rating of 1200W and is designated to be used on a 120V household circuit. How much current flows through the dryer when it is in use?

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  3. 1200w/120v=10A
    i=10amps

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