A resistor, a resistor and an unknown resistor are connected in series to a source.…

PHYSICS · Multi-part · CBSE · Physics · Electricity · Electricity

Problem

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.