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