Definitions
Circuits & Symbols
Solving for circuits
Extra Knowledge
Thinking questions
100
Charging by friction
Rubbing two different materials together.
100
What is this symbols?
Breaker
100
Solve for V2
V2= 40
100
Can lightning happen between clouds?
Yes
100
You rubbed a balloon on your head and then you went and put it against the wall. This made it the balloon stick to the wall. What is happening between the balloon and the wall?
The negatively charged balloon sticks to the positively charged wall which makes the electrons in the wall move away from the area where the balloon is.
200
Charging by Conduction
Touching a charged object with neutral object.
200
What is this symbol?
Resistor
200
Solve for R3
R3= 8
200
Can lightning have branches?
Yes, lightning can have branches.
200
How does lightning happen/appear?
!. Water droplets rub together by friction.
2. All the negative charges move down to the bottom of the cloud.
3. The negative charges in the cloud find the nearest positive area to strike.
4. Then it strikes making all the electrons in the could release into the ground.
300
Charging by induction
A charged object brought close to a neutral object
300
What is this symbol?
AC battery
300
Solve for I2
I2= 6
300
Which one is all the same in a parallel circuit? Resistance, current, or voltage?
Voltage
300
How does a lightning rod work?
It takes the electrons released from the could and grounds it by sending it to the ground without affecting the building.
400
Resistance
Makes the flow slower. Also, measures how hard it is for the flow to pass through the circuit.
400
What circuit is this?
A series circuit
400
Solve for Rt
Rt= 1.14
400
Which one is all the same in a series circuit? Resistance, current, or voltage?
Current
400
Why is a parallel circuit better than a series circuit for houses/buildings?
A parallel circuit is better because if one of the lights burn out, the rest of them will still work perfectly fine. Another thing, is that you can control each light individually.
500
Current & Voltage
Current: Flow of electrons
Voltage: Amount of energy in the circuit.
500
What circuit is this?
A parallel circuit.
500
Solve for V1
V1= 18
500
Which circuit is better to use for a building/house? A series circuit or a parallel circuit?
A parallel circuit is better to use.
500
Why do you get shocked when you touch a metal door handle after rubbing your feet on the carpet? What type of charge was used?
1. Charge by friction
2. You got shocked because when you were rubbing your feet on the carpet you were building up a negative charge. They needed a quick escape so they jumped off you and moved to the metal door handle for release when you went close to it. That's why you got shocked