Show:
Parts of a Circuit
Energy Transformation in a Circuit
Parallel vs. Series Circuits
Conductors and insulators in a circuit
Ohm's Law
100
A student is constructing an electrical circuit. Which of the following can provide energy for the circuit? A.electric generator B. Wire C. light bulb D.buzzer
Answer: A. an electric generator
100

The type of energy a circuit always starts off with is ________________ energy.

Electrical

100
In a parallel circuit electricity has ______ path(s) to follow.
multiple
100

Some students test a plastic spoon as a connector in an electrical circuit. Electricity does not flow in the circuit. Plastic is most likely... A. a conductor B. an insulator

B. an insulator

100

Calculate the current through a circuit with a 24V battery and a 480 ohm lightbulb. 

What is 0.05 A?

200

What is the role of a lightbulb or resistor in an electric circuit?

This is the part of the circuit that receives electrical energy and can be turned on.

200

What type of energy is produced from electrical energy in a lightbulb?

Light or thermal

200

If one lightbulb stops working in a series circuit what happens to any other lightbulbs in the circuit?

They also stop working.

200
Which material will best conduct electricity? A. plastic B. rubber C. wood D. silver
D. silver
200

A light bulb has a resistance of 5 ohms and a maximum current of 10 A. How much voltage can be applied before the bulb will break?

What is 50 volts?

300

Name 3 examples of an energy source.

Battery electric generator at a power plant, hand crank, water flow, photocells

300
Which device can be added to an electrical circuit to convert electrical energy into mechanical energy? A. a switch B. a lightbulb C. a fan D. a speaker
C. a fan
300
Do you think Christmas Lights are an example of a series circuit or a parallel circuit? why do you think that?
They are an example of a series circuit because if one of the bulbs burns out the entire strand will not light up.
300
If you connect the wires of an electric circuit to a piece of jewelry why would the lightbulb in the circuit still turn on?
Because the jewelry is made of something that can conduct electricity.
300

What happens to the current in a circuit if a 1.5-volt battery is removed and is replaced by a 3-volt battery?

Current will double. 
400

Explain how a switch works in an electrical circuit.

When the switch is on the circuit is closed so electricity can flow. When the switch is off the circuit is open so electricty cannot flow.

400

If an electrical circuit has a bell for a resistor and a battery for an energy source what energy conversions will occur? (3 types of energy)

chemical energy --> electrical energy --> sound energy

400

Come to the board and draw a diagram of a parallel circuit.

Teacher approval

400

Ms. Liszka wants to make an electric circuit but she is fresh out of copper wire. What are 3 other household items that she could use in place of wire to carry the electricity to the load?

silverware metal necklaces steel wool keys aluminum foil etc.

400

What happens to the current in a circuit if a 10Ω resistor is removed and replaced by a 20Ω resistor?

It is halved.

500

Where are the resistor, wires, and energy source located in a floor lamp?

The load is the lightbulb, the wires are located in the electrical cord and inside the lamp, and the energy source is the electrical outlet which leads all the way to a power plant.

500

Name something that can transform electric energy into thermal energy and name another item that can transform electric energy into sound energy.

Thermal- lightbulb, heater, etc. Sound- radio, speaker, phone, computer etc.

500

If all the lights of a robot were wired in a series circuit, what would happen if the one of the lightbulb's in the robot burned out?

All the lights of the robot would not work because the electricity only has one path to follow in a series circuit.

500
Why do electricians use wire that is coated in plastic when they are making new circuits?
This is because the wire can be dangerous to handle and can shock humans if they handle it when the circuit is on. The plastic coating helps to protect the electricians and us!
500

A subwoofer needs a household voltage of 110 V to push a current of 5.5 A through its coil. What is the resistance of the subwoofer?

What is 20 ohms?