Question

A 160 W lightbulb is plugged into a standard 120 V outlet. What is the current flowing through the lightbulb?

A. 1.33 A

B. 1.67 A

C. 2.00 A

D. 2.33 A

Answer 1

To find the current flowing through the lightbulb, you can use Ohm's Law. First, find the resistance of the lightbulb. Then, divide the voltage by the resistance to find the current.

Step-by-step explanation:

To find the current flowing through the lightbulb, we can use Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R). In this case, the voltage is 120 V and the power of the lightbulb is 160 W. Since power is equal to voltage multiplied by current (P = IV), we can rearrange the equation to solve for current. First, we can find the resistance of the lightbulb by dividing the power by the voltage (R = P/V). Then, we can find the current by dividing the voltage by the resistance (I = V/R).

Resistance (R) = Power (P) / Voltage (V)

Resistance (R) = 160 W / 120 V = 1.33 Ω

Current (I) = Voltage (V) / Resistance (R)

Current (I) = 120 V / 1.33 Ω ≈ 1.33 A