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A circuit consists of a 45 V battery connected to a 15 ohm resistor and a...

A circuit consists of a 45 V battery connected to a 15 ohm resistor and a parallel combination of three 18 ohm resistors. What is the current out of the source?

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Answer #1

In order to find the current through the resistor, we have to find the equivalent resistance of the circuit. We know in parallel connection the equivalent resistance is 1/R = 1/R1+1/R2+...

and for series connection the equivalent resistance is , R = R1+R2+...

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