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You have a 20 V voltage source and need to “plug in” 3 appliances. The appliances...

You have a 20 V voltage source and need to “plug in” 3 appliances. The appliances have resistances of 4 ohms, 2 ohms and 2 ohms respectively. The 4 ohm appliance requires a current of 4 A and the 2 ohm appliances each require a current of 2 A. Show the necessary configuration to make this possible. How much energy would the 2 ohm appliance dissipate in 40 s? How many electrons pass through the 4 ohm resistor each second?

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