Parts of a Circuit
A student is constructing an electrical circuit. Which of the following can provide energy for the circuit? A.battery B. Wire C. light bulb D.buzzer
Answer: A. battery
V = I * R
In a parallel circuit electricity has ______ path(s) to follow.
multiple
What does a dimmer (or potentiometer or a dial) do in a circuit?
The dimmer can change the amount of resistance in a circuit.
As resistance increases in a circuit, what happens to the current?
What is the current decreases.
Name an example of a resistor that is not a light bulb.
refrigerator, computer, etc.
If the voltage in a circuit increases, what happens to the current?
What is the current increases
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.
Two positive charges are placed next to each other. Will they attract or repel?
What is they repel
Come to the board and draw a diagram of a parallel circuit.
To be determined by Mrs. R.
Mrs. R. wants to make an electric circuit but she is fresh out of copper wire. What is another household item that she could use in place of wire to carry the electricity to the device?
silverware metal necklaces steel wool keys aluminum foil etc.
Where are the resistors, wires, and energy source located in a lamp?
The resistor 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.
Coulomb's Law shows us that if we decrease the distance between two charges, what will happen to the force between them?
What is the force will increase.
If all the devices (resistors) of a robot were wired in a series circuit, what would happen if the one of the lightbulbs in the robot burned out?
All the devices (resistors) of the robot would not work because the electricity only has one path to follow in a series circuit.
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!