Electricity Basics #1
Electrical Safety
Electricity Basics #2
Schematic Symbols
Series & Parallel Circuits
100
Fill in the blank.
Opposite charges ________.
attract
100
True or False
A bird perched on an electrical wire will not get shocked because there is no difference in electrical potential between its feet.
True
100
Fill in the blank. To complete a circuit the switch must be _____.
closed
100
Resistor
100
Solve for the total resistance.
12 ohms
200
Fill in the blank.
When a switch is _______, the electric current can move through the circuit.
On
200
True or False
If you place a metal ladder against an electrical power line and climb it, you will not get shocked because you are so far from the ground.
False
200
Fill in the blank.
This is the material that allows electrons to flow through it or a pathway for electricity.
conductor
200
Lamp
200
Solve for the total resistance.
3 ohms
300
Fill in the blank.
Wires allow a __________ of electricity to flow in a circuit.
current
300
True or False
It is generally okay to use electrical devices around water if you use a good quality extension cord.
False
300
This is a circuit that has only one pathway for electricity to flow.
series circuit
300
Battery (power supply)
300
Solve for the current flowing through R1.
1 Amp
400
This is the unit of measurement for current.
amperes (or amps)
400
Fill in the blank.
For current to flow there must be a difference in _______ between two locations and the path connecting them.
electrical potential
400
There is a series circuit composed of a lamp, battery, and resistor. High resistance in the circuit will affect the lamp in what way?
The lamp will be dim.
400
Ground
400
Solve for the power of the circuit.
12W
500
This is the form of energy stored in a battery.
chemical energy
500
True or False
An electrical ground provides an alternative path for current if something goes wrong in a circuit or device.
True
500
Fill in the blanks.
Electrons flow from ______ to _______ in an electrical circuit.
Negative to positive
500
Inductor
500
Solve for the voltage drop across R3.
6V