A 3-$\Omega$ and a 1.5-$\Omega$resistor are wired in parallel and the combination is wired in series to a 4-$\Omega$ resistor and a 10-V emf device.The potential difference across the 3-$\Omega$ resistor is:
A)2.0 V
B)6.0 V
C)8.0 V
D)10 V
E)12 V

Question

Quizplus · Accepted Answer

The total resistance of the parallel combination is 1 ohm. In series with the 4-ohm resistor, the total resistance is 5 ohms. The current through the circuit is 2 A (10 V / 5 ohms). The voltage across the 3-ohm resistor is 2 V (2 A * 1 ohm).

A 3- Ω\OmegaΩ And a 15- Ω\OmegaΩ Resistor Are Wired in Parallel and the Combination Is Wired

A 3- $\Omega$ And a 15- $\Omega$ Resistor Are Wired in Parallel and the Combination Is Wired