Chapter 1, Section 1 Flashcards
What part of an atom is associated with the flow of electricity?
Electrons are associated with the flow of electricity.
What term is used to express the flow of electricity?
Current.
Define Coulomb.
Coulomb is the unit of electric charge. One coulomb is defined as the amount of charge transported by a current of one ampere in one second.
What is the basic unit of electrical pressure? What other names could it go by?
The basic unit of electrical pressure is the volt. It could also be referred to as electrical potential or electromotive force (EMF).
If voltage and resistance are known, describe how total current can be determined, show the equation.
Total current (I) can be determined using Ohm’s Law, which states that current is equal to voltage divided by resistance. The equation is:
I = V/R, where I is current in amperes (A), V is voltage in volts (V), and R is resistance in ohms (Ω).
What device other than an actual battery can be used to store energy?
Capacitors are devices other than actual batteries that can be used to store electrical energy.
Describe the left hand rule as it pertains to electrical generation.
The left-hand rule is the direction of induced current flow in a conductor when it moves through a magnetic field. The index finger points in the direction of the magnetic field, and the middle finger points in the direction of motion of the conductor, then the thumb points in the direction of the induced current.
Write the number 5,780,000,000,000 in scientific notation.
5.78×10^12
What is the property called when lines of magnetic flux travel freely through a material?
Permeability.
What is it that pushes back against the EMF in circuits such as generators?
Back electromotive force
