Electricity and Magnetism

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Voltage and Currents in Complex Circuits


Consider the accompanying circuit diagram. A battery with a voltage of $20\,V$ is hooked up to 4 resistors in the configuration as shown. The current through the $5\Omega$ resistor is measured to be $1\,A$.

What is the value of the resistor labeled $R$?

What is the value of the current ($I$) leaving the battery?

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