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Electricity & Magnet
Electricity and Magnetism
| Question | Answer |
|---|---|
| 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
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