Electric Charge
What are the two types of electric charge
Positive and Negative
unit for electric current
what is unit for voltage
ohms law?
v=RI
what is unit for power
watt
What particle carries a negative charge?
Electrons
what device measures electric current
ammeter
whats the unit for resistance
ohm
a current has 12 volts and 3 amps, what is voltage
4 ohms
what is equation for power
p=VI
What particle carries a positive charge?
Protons
in a series circuit, how many paths could the current travel?
one
a current has 12 volts and 8 ohms, current?
3 amps
a device uses 120volts and 5 amps, power?
600watts
What happens when two like charges are brought together?
They repel
in a paralles circuit what happens when one stops
the rest continue normally
what happens to resistance when the length of the wire increases
increases
if the coltage doubles, while rsitance stays constant, current?
ddoubles
what i unit of electrical enegry
joules
what happens when a positive charged object touches a neutral one?
charge is transferred, becomes positive
define electric current
the rate of flow of electric charge
name 2 things that effect resistance
length, temp
a resisitor of 6 ohms and current of 2 amps, voltage?
12v
a 100 watt runs for 10 seconds, energy?
1,000 joules