Download Name: ___________________________________ Date: _________________________ Define the following terms:

Name: ___________________________________
Date: _________________________
Electricity Review
1) Define the following terms:
Vocab Term
Electrical
Charge
Definition
Alternating
Current
Direct Current
Conductor
Insulator
Resistor
2) Fill out the following chart:
Term
Units
How it is measured
Voltage
Volts
Voltmeter
Current
Resistance
3) Your dog, which has been rolling around on the carpet, comes to lick you. When his
nose touches you, you receive a shock! What is the shock made out of and how did the
dog acquire it?
4) Fill out the following chart:
What happens in the
circuit
Series Circuit
Parallel Circuit
Voltage
Current
What adds?
How many paths can
current take?
5) Draw a series circuit, be sure to include a battery, wires, a switch, a light bulb and a
microwave (resistor)
6) Draw a Parallel Circuit. Be sure to include a battery, wires, a switch and THREE light
bulbs.
7) What is the difference between an open and a closed circuit?
8) You are doing yard work and listening to the radio. The radio seems to malfunction
when you have it out in the hot sun. You decide to take a break and move the radio with
you under an umbrella. Why does the radio start to work normally again? Explain using
temperature and particles.
9) How does a dimmer switch work?
10) A friend of yours is designing the next great cell phone. He decides that he will use a
new kind of plastic to run the current through. Explain to him why this is a bad idea.
11) Recall that 1 Coulomb = 6.25 x 1018 charges. If a bolt of lightning has 24 C, how many
electrons is it made up of?
12) A transformer is connected to 120 volts. Find the current if the resistance is 480-ohms.
13) Find the applied voltage of a telephone circuit that draws 0.017amperes through a
resistance of 15,000 Ω.
14) An iPod uses a standard 1.5 V battery. How much resistance is in the circuit if it uses a
current of 0.01 A?
15) If a blender is plugged into a 110 V outlet that supplies 2.7 A of current, what amount of power
is used by the blender?
16) If a clock expends 2 W of power from a 1.5 V battery, what amount of current is supplying the
clock?
17) Tommy runs his juicer every morning. The juicer uses 90 W of Power and the current supplied
is 4.5 A. How many volts are necessary to run the juicer?
18) Amanda’s hair dryer requires 11A of current from a 110 V outlet. How much power does it
use?
19) A DC electric motor transforms 1.50 kW of electrical power into mechanical form. If the
motor's operating voltage is 300 volts, how much current does it "draw" when operating at full
load (full power output)?
20) The headlights of an automobile have two power ratings: 45 W for the low beam and 65 W for
the high beam. How much is the current in the headlight filament of a headlight bulb for both of
these settings when 12 V is provided by the car battery?
21) An electric mixer draws 200.0 W of power. If the mixer is plugged into an outlet across a
voltage of 115 V, what current is in the mixer’s circuit?