A flashlight has four 1.5-volt batteries. The bulb has a resistance of 2.4 ohms. What is the amperage of the circuit?

V=IR

(1 point)
Responses

0.4 A
0.4 A

14.4 A
14.4 A

2.5 A
2.5 A

0.625 A

1 answer

To find the amperage (current) of the circuit, we can use Ohm's Law, which states:

\[ V = I \cdot R \]

Where:

  • \( V \) is the voltage,
  • \( I \) is the current (amperage),
  • \( R \) is the resistance.

First, let's calculate the total voltage from the batteries. Since the flashlight has four 1.5-volt batteries in series, the total voltage \( V \) is:

\[ V = 4 \times 1.5 , \text{volts} = 6 , \text{volts} \]

Now, we can rearrange Ohm's Law to solve for current \( I \):

\[ I = \frac{V}{R} \]

Substituting the values we have:

\[ I = \frac{6 , \text{volts}}{2.4 , \text{ohms}} = 2.5 , \text{A} \]

So, the amperage of the circuit is 2.5 A.

The correct response is:

2.5 A