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The current through the 40-ohm resistor is ( E / R ) = (120 / 40) = 3 amperes.

The current through the 40-ohm resistor doesn't depend on the 120-ohm resistor. It's the same

whether the 120-ohm is there or not. It would also be the same if there were any other resistor,

with any other resistance, connected in place of the 120-ohm resistor. It would also be the same

if there were 3,000 more resistors in parallel, with all different values of resistance (as long as

the whole conglomeration didn't exceed the capabilities of the power source).

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Q: A 120 ohm resistor and a 40 ohm resistor are connected in parallel to a 120 volt power source what is the current running through the 40ohm resitor?
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