Electricity 1
What is the unit for Power?
Watts
Electricity is the movement of what particle?
Electrons
If a circuit has a current of 2A and a voltage of 120V, what is the resistance?
R = 60 Ohms
Fill in the blanks: ____ hurts, but ______ kills.
Voltage, Current
What is the unit used for resistance in a circuit?
Ohms
What is the unit used for current?
Ampere, Amps
What 3 things are necessary for electricity to flow in a circuit?
Voltage, conductor (wire), load/resistor (light bulb, etc.)
What is static electricity?
A build up of excess charges on an object
Using Current and Voltage, what is the equation for Power?
P = IV
A circuit that has only one path
Series curcuit
What is a conductor?
A material that allows charges to flow though it
What is one example of a conductor?
metals, copper, gold, silver, salt water, ect
What is one example of an insulator?
Several examples can be given.
If a motor has a power rating of 50W but only delivers 40W, what is its efficiency?
80%
What type of circuit has more than one path of flow.
Parallel Circuit
What is the electric force required to cause electrons to flow in a circuit called?
The voltage
What is an insulator?
A material that current cannot pass through easily.
What type of charge transfers through direct contact of objects
conduction
If 5000 Coulombs of charge flow for 250 seconds, what is the current?
20 A
Charging method that requires contact of objects but no motion
Conduction