If an electric heater has a resistance of 17.32 ohms and requires a current of 6.93 amperes, what is the circuit voltage?

To determine the circuit voltage for the electric heater, we can apply Ohm's Law, which states that the voltage (V) across a conductor is equal to the product of the current (I) flowing through it and the resistance (R) of the conductor. The formula is expressed as:

V = I × R.

In this scenario, the resistance is given as 17.32 ohms and the current is 6.93 amperes. Using the formula, we can calculate the voltage:

V = 6.93 A × 17.32 Ω = 120.00 V.

Rounding this value to the nearest hundredth, we determine that the circuit voltage is approximately 120.03 volts. Therefore, this confirms that the choice of 120.03 V is indeed the correct answer.

The calculation illustrates the fundamental principles of electric circuits and reinforces the relationship between voltage, current, and resistance. Understanding these concepts is essential in various applications, particularly in analyzing circuit performance and ensuring safe and effective design and operation of electrical devices.