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24 Cards in this Set
- Front
- Back
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The_____ is the unit of current.
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the ampere
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_____is the force or electrical pressure that produces electron movement and current flow.
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voltage
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One ampere is equal to______.
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1 coulomb flowing per second
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One kilovolt is equal to _____volts.
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1000 volts
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Resistance is increased when the conductor diameter gets smaller. TRUE OR FALSE?
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true
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According to ohm's law, the current in a circuit with 120 volts and a resistance of 5 ohms is:
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24 ampere
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What is the resistance of a circuit if the voltage is 24 V and the current is 60 apmeres?
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.4
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the equation for voltage is-
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voltage = current x resistance
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the equation for resistance is-
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voltage/current= resistance
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The equation for current is-
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current= voltage/resistance
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int he unites states, the standard current that comes into our homes is:
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AC
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The unit of power is the watt. One watt is produced by:
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1 ampere flowing with a pressure of one volt
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Electric power( the watt) is determined by the formula:
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volts times amperes equals watts
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If the electricity to your home costs .75 cents per kilowatt hour and you operate a 2000 watt vacuum cleaner for 30 minutes, what is your cost for this period of time?
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.75 cents
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Increasing the length of a conductor will also increase:
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the resistance
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66 kilovolts carrying 500 amperes will have a resistance of:
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132 ohms
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A semiconductor can be classified as:
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an insulator and a conductor
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Objects can be electrified by one of 3 methods; friction, contact, and______
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induction
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If a circuit is carrying 500 volts and has a resistance of 1 ohm, the amperage in this circuit is 500 A. TRUE OR FALSE?
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TRUE
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Increasing the temperature in a circuit also increase the:
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resistance
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What metal makes a better conductor?
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gold
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According tot he laws of electrostatics, unlike charges will repel one another. TRUE OR FALSE
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False, like charges will repel one another.
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Charges will tend to reside on the external surface of a conductor. TRUE OR FALSE
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TRUE
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The greatest concentration of charge in a solid metallic wire will be outside or inside?
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on the outside surface at an area sharpest curvature
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