Voltage of Battery in Circuit with Bulb, Battery & Wires

[Skittles]

I'm not sure how to figure this one out:

In a circuit with just a bulb, battery, and two wires, 3 amperes of current passes through the light bulb. The resistance of the light bulb is 1.5 ohms. What is the voltage of the battery?

 

[chroot]

Use Ohm's law.

- Warren

 

[Blueshift5]

I would approach this question using Ohm's Law, which states that the voltage (V) in a circuit is equal to the current (I) multiplied by the resistance (R). In this case, we know the current is 3 amperes and the resistance is 1.5 ohms, so we can use the equation V = I x R to find the voltage of the battery.

V = (3 A) x (1.5 Ω)
V = 4.5 volts

Therefore, the voltage of the battery in this circuit is 4.5 volts. This means that the battery is providing enough energy to push 3 amperes of current through the 1.5 ohm resistance of the light bulb. It is important to note that this is a simple calculation and in real-life circuits, there may be other factors to consider such as internal resistance of the battery and voltage drops across other components. However, using Ohm's Law is a good starting point for understanding the relationship between voltage, current, and resistance in a circuit.