electrical work and power Flashcards
1
Q
What are electrical circuits used for?
A
To transform energy
2
Q
What provides energy to an electrical circuit?
A
A battery or another electrical energy source provides energy to the circuit.
3
Q
What is a kilowatt-hour?
A
A unit of energy used by electricity companies.
4
Q
What voltage do U.S. electricity companies maintain across the two main wires of a house?
A
110 to 120 volts.
5
Q
Why is energy required to maintain the electric potential difference in a house?
A
You need energy maintain the electric p
