Question

The current in a hair dryer measures 15.0 amps. The resistance of the hair dryer is 8 ohms. What is the voltage? V = I X R

Answer 1

Answer: The correct answer is 120 V.

Step-by-step explanation:

The expression from Ohm's law is as follows;

V=IR

Here, V is the potential difference, I is the current and R is the resistance.

It is given in the problem that the current in a hair dryer measures 15.0 amps. The resistance of the hair dryer is 8 ohms.

Calculate the value of voltage.

Put I= 15 A and R= 8 ohms.

V= (15)(8)

V= 120 V

Therefore, the voltage is 120 V.

Answer 2

Keywords:

Hair dryer, current, resistance, voltage , Ohm's Law

For this case we have that the current of a hair dryer is 15 Amps, while its resistance is 8 ohms. They ask us to find the voltage of the hair dryer. We have that, by definition, Ohm's Law states that:

`V = I * R`

Where:

• I: Is the current,
  `I = 15 Amps`

• R: It is the resistance,
  `R = 8 Ohms`

Substituting we have:

`V = 15 * 8\ (Amperes * Ohms)\\V = 120\ Volts`

Thus, the voltage of the hair dryer is 120 volts.

Answer:

`V = 120 Volts`