Question

The circuit below is powered by a 9-volt battery. What is the voltage measured by the voltmeter?

Answer 1

I think the answer is B

Answer 2

Answer:

A. - 2.50 volts

Step-by-step explanation:

The equivalent resistance of the two parallel light bulbs is 13 ohms (1R=126+126=113, so R=13).

The total resistance of the circuit is 13+5=18 ohms. By Ohm's law (I=V/R), the current in the circuit is 918, or 0.5 amps.

The voltage across the 5-ohm resistor is also found using Ohm's law, rewritten as V=I⋅R. Therefore, the voltage is 0.5⋅5= 2.5 volts.