How to Calculate Current Flowing through a Light Bulb

Question:

You light a light bulb with a 1.5 volt battery. If the bulb has a resistance of 10 ohms, how much current is flowing?

Answer:

0.15 amperes

Using Ohm's Law, the current flowing through the light bulb can be calculated by dividing the supplied voltage (1.5 volts) by the resistance of the bulb (10 ohms), which gives a current of 0.15 Ampere.

Explanation:

To answer your question, we need to use Ohm's Law, which states that the current flowing through a circuit is equal to the voltage divided by the resistance. In this case, we have a voltage of 1.5 volts and a resistance of 10 ohms. To find the current, we divide the voltage by the resistance.

So, I = V/R

Plugging in the given values we get:

I = 1.5V / 10Ω = 0.15A

So, the current flowing through the light bulb is 0.15 Ampere.