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Electricity and Magnetism

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Moderate

Voltages and Currents in Resistor Circuits

EANDM-CEYGFP

Consider the circuit in the accompanying diagram. There are four resistors: Two resistors ($10\Omega$ and $20\Omega$)connected in series on the left leg between points (a) and (c), and two resistors ($5\Omega$ and $15\Omega$) between points (b) and (d). The voltage between point (e) and the negative terminal of the battery is measured to be $15$ Volts.

What is the voltage on the battery ($V$)?

What is the voltage between point (f) and the negative terminal of the battery?

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