Flashcards
Resistance (Mod. 1 pt6)
Flashcards do conjunto (23)
- 1The most common type of resistor is the _____ resistor.carbon
- 2The carbon resistor is also called the _____ resistor.fixed
- 3The _____ resistor is a type of resistor that can change its resisitance.variable
- 4The variable resistor is also called a _____.potentiometer
- 5______ are used when varying control of the resistance in a circuit is needed.Potentiometers
- 6The major parts of a potentiometer include a _______, a _______, and a _______.resistive strip, sliding contact, rotating shaft
- 7There are two basic types of potentiometers the ______ and the ______.linear taper, audio taper
- 8In a _______ potentiometer, each increment of shaft rotation corresponds to an equal amount of resistance value.linear taper
- 9In an _______ potentiometer, the resistance varies greatly according to the amount of shaft rotation, especially at the clockwise extreme of rotation.audio taper
- 10______ potentiometers are often used as volume controls in devices such as TVs and radios.Audio taper
- 11_____ potentiometers are used on circuit boards for temperature, lighting, and motor control circuits.Miniature
- 12The resistance of a miniature potentiometer can be adjusted by turning the _______.adjustment screw
- 13A special type of potentiometer called a _____ is used in some high-power circuits.rheostat
- 14A ____ potentiometer is a wirewound resistor with a sliding tap. The resistance of this resistor can be varied by by loosening the clamp screws and moving the tap to a new spot.slide
- 15The ____ potentiometer is used in power circuits where resistance changes will be made infrequently.slide
- 16The formula _____ states that the amount of power that's actually handled by the resistor is the product of the voltage across the resistor and the current flowing through the resistor.Power=ExI
- 17The color of the first band on the left side end of a resistor tells you the ____ digit in the resistor's value.first
- 18The color of the second band from the left tells you the ____ digit in the resistor's value.second
- 19The color of the third band will tell you how many ____ are placed after the first two digits.zeros
- 20If a resistor has a third band that's gold or silver, it will have a _____ instead of a number of zeros.multiplier
- 21Always read the color bands on a resistor from ____ to ____.left to right
- 22The fourth color band on a resistor tells you the ____ of the resistor as a percentage.tolerance
- 23_____ is the allowable amount of difference between the true resistance and the labeled resistance on a resistor.Tolerance
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