SI UNITS of MEASUREMENT
What is the SI Unit for ELECTRIC CHARGE?
(C) Columb
What is the definition of ELECTRIC CURRENT?
A continuous flow of electric charge
What are the 3 ways in which an ELECTRIC CHARGE can be TRANSFERRED?
By FRICTION, CONTACT, and INDUCTION
What is a SERIES CIRCUIT?
A circuit in which the charge has only ONE PATH to follow
In what TYPE of ELECTRICAL CURRENT does a charge flow only in ONE DIRECTION?
What is the SI Unit for ELECTRICAL POTENTIAL DIFFERENCE?
(V) VOLTS
How much ELECTRICAL ENERGY is required to run a 6 watt lightbulb for 3 hours?
6w x 3 hours = 18
What are 3 common sources of VOLTAGE?
What is a PARALLEL CIRCUIT?
A circuit in which the charge has TWO or MORE PATHS to follow
In what type of ELECTRICAL CURRENT does a charge regularly change its direction?
(AC) Alternating Current
What is the SI UNIT for ELECTRIC POWER?
(w) WATT
What is a CONDUCTOR?
a metal that allows electricity to flow
What 2 things determines the STRENGTH of an ELECTRIC FIELD?
The AMOUNT OF CHARGE and the DISTANCE from the charge.
What component of an electrical circuit REDUCES the current in a circuit?
A RESISTOR
What is the RATE at which ELECTRICAL ENERGY is converted to ANOTHER FORM of ENERGY?
ELECTRIC POWER
What is the SI Unit for RESISTANCE?
(o)OHMS
What is an INSULATOR?
A non-metal in which electricity cannot easily flow
What is the purpose of an INVERTER in an off-grid power system, such as solar panels?
to convert DC power to usable AC power
A FUSE
If you have a circuit in which one light stops working, but the remaining two lights continue to work, what type of circuit would this be?
A PARALLEL CIRCUIT
What is the SI Unit for ELECTRIC CURRENT?
(A) AMP or AMPERE
How many WATTS are required to operate a 5 amp lightbulb with a 6 volt battery?
5amps x 6volts = 30 watts
What is VOLTAGE?
The potential difference in electrical potential energy between two places in an electrical field
What is the relationship between VOLTAGE, CURRENT, and RESISTANCE in OHM'S LAW?
Increasing VOLTAGE INCREASES the CURRENT
KEEPING the VOLTAGE the SAME and INCREASING the RESISTANCE DECREASES the CURRENT
What does an EXCESS or SHORTAGE of electrons produce?
A NET ELECTRICAL CHARGE