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Electricity & Magnet

Electricity and Magnetism

Resistance is measured in a unit called ____. Ohms
The statement that current is equal to the voltage difference divided by the resistance is known as ____. Ohm's Law
A path that allows only one route for an electric current is called a ____. Series circuit
A circuit that has two or more branches for electrons to follow is a(n) ____. Parallel circuit
The rate at which an electrical device converts energy from one form to another is called ____. electrical power
A material through which electrons do NOT easily flow is a(n) ____. Insulator
Lightning is ____. a large discharge of static electricity
Which of the following is the correct relationship among power, current, and voltage? Power = current * voltage
Which of the following is a device designed to open an overloaded circuit and prevent overheating? Circuit breaker
A negatively charged balloon sticks to a wooden door. However, an uncharged balloon does not stick to a wooden door. What is the nature of the charge on the wooden door? electrically neutral
_____charges repel, whereas _____ charges attract. Like; unlike
A/An _____ is a material in which charges will not move easily, whereas a/an _____ is a material that allows charges to move about easily. Insulator, conductor
An area with excess electrons has a net _____ charge; an area with a deficit of electrons has a net _____ charge. negative; positive
Normally, atoms are electrically neutral because there are ____. equal number of protons and electrons
One example of a good conductor is ____. copper
A/An _____ is described as a closed loop or pathway that allows electric charges to flow. electric circuit
Current that does NOT reverse direction is called ____. direct current
The location of the strongest magnetic forces is the ____. magnetic poles
Current that reverses direction in a regular pattern is called ____. alternating current
The region around a magnet where the magnetic forces act is the ____. magnetic field
The south pole of a magnet ____. attracts a north pole
When you break an iron magnet into two pieces, you get ____. 2 north poles and 2 south poles
An electromagnet is ____. only operating when the current is on
Created by: kbordelon2