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Honors Physics > Ohm's Law and Resistance > Flashcards

Ohm's Law and Resistance Flashcards

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1
Q

resistor

A

a device with a specific resistance that is used to control current

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2
Q

conventional current

A

the flow of positive charges that move from a higher to lower potential energy

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3
Q

an ampere is equal to a

A

coulomb/second

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4
Q

least resistance

A

short, fat, and cold

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5
Q

a watt is equal to a

A

ampere* volt OR Joule/Coulomb

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6
Q

an ohm is a

A

volt/ampere

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7
Q

current is measured in

A

amperes

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8
Q

power is measured in

A

watts

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9
Q

resistance is measured in

A

ohms

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10
Q

electric current

A

flow of charged particles

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11
Q

electric current is caused by

A

electric potential difference

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12
Q

electric potential difference exists because there is

A

an electric field

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13
Q

electric circuit

A

a closed loop or conducting path that allows flow of charge

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14
Q

power

A

the rate of energy transfer OR how quickly work is done

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15
Q

voltmeter measures

A

voltage (electrical potential difference)

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16
Q

a voltmeter is connected to a circuit

A

in parallel to a device so you can measure the difference in electrical potential energy/ coulomb before and after electrons go through it

17
Q

ammeter measures

A

current

18
Q

a ammeter is connected to a circuit

A

in series with a device because current is the same everywhere in a series current

19
Q

direct current

A

charges move in one direction (overall)
*
Generally, this type of current is supplies by a battery

20
Q

alternating current

A

charges vibrate back and forth because the potential difference provided by the voltage source is constantly chaning sign

21
Q

flow of charged particles

A

Electric current

22
Q

a closed loop or conducting path that allows flow of charge

A

Electric circuit

Honors Physics (7 decks)

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