A 1500 W electric heater is plugged into the outlet of a 120 V circuit that has a 20 A circuit breaker.?
You plugged a 1500 W electric heater into a 120 V outlet, which is protected by a 20 A circuit breaker. Additionally, you connected an electric hair dryer with power settings of 600 W, 900 W, 1200 W, and 1500 W to the same outlet. Starting with the hair dryer on the 600 W setting, you progressively increased the power setting until the circuit breaker tripped. Which power setting caused the breaker to trip? A) 600 W B) 900 W C) 1200 W D) 1500 W
I believe the correct answer is option C, but I'm unsure. Can someone please help me confirm if this is correct? Thank you very much in advance.
1 Answers
Feb 20, 2025
In theory the 20 amp breaker will carry up to 20 amps and will trip for currents above that. (Since your loads are almost entirely resistive you can ignore power factor.) So the total power that you can draw is 2400 watts. 2400-1500=900, so B is the correct answer.
Related Questions
"If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what fraction of the water wo...
Have you ever noticed how the rear wheel of a bike seems to follow the front wheel closely? Why does this happen, and is...
What does CSS stand for: Cybernet Slash Support or Cybernet Software Systems? I came across a company located in T. Naga...
Please identify each of the following as measurements: Length Area Volume Mass Density Time Temperature...
Today's CPUs operate at speeds measured in gigahertz rather than kilohertz. Is this statement true or false?
What view in a presentation program allows you to display your slides in full-screen mode?
I have a question regarding torque in a magnetism context. I understand that the equation τ = IABsin(θ) will be relevant...
A 4.5 kg box slides down a 4.4 m high frictionless hill, starting from rest. It then travels across a 2.4 m wide horizon...
How does friction play a role in sledding and skiing? Specifically, what are the effects of friction on speed, control,...
What is the speed of light in kilometers per hour?