Question

multiple choice questions(k/u)
question 1 (1 point)
a 110-v hair dryer is rated at 1200 w. what current will it draw?
0.090 a
1.0a
11 a
12a
question 2 (1 point)
the units used to measure charge, current, potential difference, and resistance are, respectively,
a. ampere, joule, ohm, volt d. ampere, joule, volt, ohm
b. coulomb, ampere, volt, ohm e. ampere, coulomb, ohm, volt
c. coulomb, ampere, ohm, watt
a
b

Explanation:

Question 1

Step1: Recall power formula

The formula for electric power is \( P = VI \), where \( P \) is power, \( V \) is voltage, and \( I \) is current. We need to solve for \( I \), so rearrange the formula to \( I=\frac{P}{V} \).

Step2: Substitute values

Given \( P = 1200\space W \) and \( V = 110\space V \), substitute into the formula: \( I=\frac{1200}{110}\approx10.91\space A\approx11\space A \).

• Charge is measured in coulombs.
• Current is measured in amperes.
• Potential difference (voltage) is measured in volts.
• Resistance is measured in ohms.
• Option b: coulomb (charge), ampere (current), volt (potential difference), ohm (resistance) matches these units.

Answer:

11 A (the option with "11 A")

Question 2