Term
| When an atom gains or loses and electron what term applies to it? |
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Definition
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Term
| What is the total number of connections on a rheostat? A potentiometer? |
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Definition
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Term
| An object in motion has what type of energy? |
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Definition
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Term
| What is the general term to describe a device that supplies a voltage? |
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Definition
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Term
| Carbon resistors are at what disadvantage? |
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Definition
| The resistance value changes with age |
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Term
| How do "like" and "unlike" charges react to one another? |
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Definition
| Unlike charges attract each other, like charges repel each other |
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Term
| What type of variable resistor is used to control a large amount of current? |
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Definition
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Term
| If light collides with an orbiting electron, what happens to the electron? |
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Definition
| The electron will jump to an orbit further from the nucleus |
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Term
| What terms are used to describe the spaces around charged bodies in which their influence is felt? |
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Definition
| Electric field of force, electrostatic field, dielectric field |
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Term
| A molecule is the smallest possible particle that retains the characteristic of what kind of substance? |
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Definition
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Term
| What material is most widely used as a conductor in electrical equipment? |
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Definition
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Term
| A substance that cannot be reduced to a simpler substance by chemical means is called an? |
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Definition
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Term
| Electrostatic lines of force are illustrated in what manner? |
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Definition
| Entering negative charge, leaving postitive charge |
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Term
| If low weight is a major factor, then what material should be used as a conductor? |
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Definition
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Term
| Bar magnets should be stored in what manner? |
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Definition
| In pairs with a north pole and a south pole together |
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Term
| If a glass plate is placed over a magnet and iron filings are sprinkled over the glass, a pattern will be visible. What does this pattern indicate? |
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Definition
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Term
| The law of magnetic poles states what relationship? |
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Definition
| Like poles repel, unlike poles attract |
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Term
| When light is represented as a tiny packet of energy, what are these tiny packets of energy called? |
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Definition
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Term
| What term is applied to the ability to do work? |
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Definition
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Term
| Resistance of a conductor will increase with what changes to the cross-sectional areas and the length of the conductor? |
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Definition
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Term
| An atom is the smallest possible particle that retains the characteristics of what substance? |
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Definition
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Term
| Magnetic materials have what two qualities? |
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Definition
| They are attracted by magnets and the can be magnetized |
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Term
| What is the easiest way to accumulate a static electric charge? |
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Definition
| Friction between two insulators |
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Term
| When directed drift takes place, at what speed does the effect take place? |
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Definition
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Term
| Magnetic lines of force cross at right angles. True or False? |
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Definition
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Term
| A material who's resistance decreases as temperature increases has what temperature coefficient? |
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Definition
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Term
| The north indicating pole of a compass needle is attracted to which pole on earth? |
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Definition
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Term
| In addition to friction, magnetism, and chemical action, what else can be used to produce voltage? |
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Definition
| Pressure, heat, and light |
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Term
| A material who's resistance remains constant as temperature increases has what temperature coefficient? |
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Definition
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Term
| A material with a low reluctance and high permeability such as iron or soft steel is used to make what type of magnet? |
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Definition
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Term
| A book sitting on a shelf has what kind of energy? |
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Definition
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Term
| What is the main difference between conductors, semiconductors, and insulators? |
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Definition
| The physical state of their mass |
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Term
| The number of electrons on the outer most shell of an atom determines what characteristic of the atom? |
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Definition
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Term
| What type of resistor will overcome the disadvantages of a carbon resistor? |
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Definition
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Term
| How is the ability of a resistor to dissipate heat indicated? |
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Definition
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Term
| The ability of a material to maintain magnetism is known as? |
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Definition
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Term
| A magnetic shield or screen used to protect a delicate instrument should be made out of what type of material? |
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Definition
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Term
| An imaginary line used to illustrate a magnetic effect is known as? |
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Definition
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Term
| Weber's theory of magnetism assumes that magnetic material is composed of? |
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Definition
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Term
| Resistance bears what relationship to conductance? |
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Definition
| A reciprocal relationship |
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Term
| High fidelity speakers use magnetism. True or False? |
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Definition
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Term
| What terms describe the difference of potential between two bodies? |
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Definition
| Voltage and electomotive force |
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Term
| If voltage in a circuit increases, what happens to the current? |
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Definition
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Term
| Ferromagnetic materials have what quality? |
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Definition
| The are relatively easy to magnetize |
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