Physics

Physics

Problem

A

10\,\Omega

resistor, a

20\,\Omega

resistor and an unknown resistor

R_x

are connected in series to a

24\,\text{V}

source. The current measured in the circuit is

0.40\,\text{A}

. (i) Determine the value of

R_x

. (ii) Calculate the power dissipated in the

20\,\Omega

resistor.

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