electrical quantities Flashcards
Greek word for “Electrons”
* Used to generate static
electricity
Amber
➢movement of charged particles (electrons) in a
specific direction.
Current
tool used for current
Ammeter
who discovered current?
Andre Marie Ampere
- constant current
- one direction only
DIRECT CURRENT (DC)
- periodically changes
direction
ALTERNATING CURRENT (AC)
Electric pressure that causes the currents to flow
➢ Electromotive force (emf)
➢ Potential Difference (pd)
Volts
who discovered volts?
Alessandro Volta
What is the tool used for volts?
Voltmeter
opposition a material offers to current
Resistance
who discovered Resistance?
Georg Simon Ohm
The longer the wire, the _______ the resistance.
The shorter the wire, the _______ the resistance.
Higher and lower
– directly proportional to resistance. Length
The thicker the wire, the _______ the resistance.
The thinner the wire, the _______ the resistance.
Lower and Higher
– inversely proportional to resistance.
Diameter
The higher the temperature, the _______ the resistance.
The lower the temperature, the _______ the resistance
Temperature
– directly proportional to resistance.
tool used in reading resistance
ohmmeter
