Question

A circuit diagram is shown below.

image.png

What is the potential difference across the 3.0-ohm
resistor, in volts to the nearest tenth?


6 volts


3 amps


3 Volts


9 volts

Answer 1

I can’t see the circuit image — could you upload it or describe the connections (how the 3.0 Ω resistor is connected, the supply voltage, and any other resistors and their arrangement)?

If you can’t upload, here are the common cases that match the answer choices and how I’d decide:

- If the 3.0 Ω resistor is the only resistor across a 6 V battery → V = 6.0 V.
- If the 3.0 Ω resistor is one of two equal resistors in series across a 6 V battery (each 3.0 Ω) → the total is 6.0 Ω, current = 6 V / 6 Ω = 1 A, so the drop across one 3.0 Ω resistor = I·R = 1 A·3 Ω = 3.0 V.
- If the 3.0 Ω resistor is in parallel with other resistors across a 6 V battery → the voltage across it is the full battery voltage, 6.0 V.
- 9 V is not possible if the supply is 6 V.

If you upload the picture or describe the circuit, I’ll compute the exact potential difference and show the steps.