Question

A car radio with a resistance of 15 ohms draws a current of 0.87 amperes. What is the voltage of the car battery?



(1 point)
Responses

1.3 volts
1.3 volts

5.8 volts
5.8 volts

13 volts
13 volts

17 volts

Answer 1

To find the voltage of the car battery, we can use Ohm's Law, which states:

\[ V = I \times R \]

Where:
- \( V \) is the voltage in volts,
- \( I \) is the current in amperes,
- \( R \) is the resistance in ohms.

Given:
- \( R = 15 \) ohms
- \( I = 0.87 \) amperes

Substituting the values into the formula:

\[ V = 0.87 \, \text{amperes} \times 15 \, \text{ohms} \]

\[ V = 13.05 \, \text{volts} \]

Rounding this to one decimal place, the voltage is approximately 13 volts.

Therefore, the correct response is:

**13 volts**