Electrostatics
Positivity Charge Subatomic Particle
The proton! +
The unit of current
The amp
Magnetism is the result of moving ___________
charge or electrons
Electric resistance in our skin is lowered when our skin is
A) moist.
B) dry.
C) none of the above
A. Moist!
Texas
Any of the following:
1.Friction
2. Contact
3. Induction
4. Chemical reaction
The flow of electrons through a material is called electric ___________
Electric Current aka Electricity
In a permanent magnet, magnetism is the result of motion of electrons best described as electron ________
(Hint: starts with an s)
spin
Two light bulbs are connected to a battery, one at a time. The bulb that draws more current has the
A) lower resistance, and is brightest.
B) lower resistance, but is dimmer.
A) lower resistance, and is brightest.
The number of subscribers to Mr. Mellor Science
110
The fundamental rule that drives the electrical force.
Like repels like and ________ _______
Like repels like and opposites attract
The current produced by voltage in a circuit is throttled by electrical r_________ measured in ohms
Electrical resistance!
List two effects that occur when electrons move through anything
1. Heat!
2. Magnetism
3. Electricity
Ohm's Law: V = I x R
The voltage across a 10-ohm resistor carrying 5 A is
A) 50 V. B) 10 V. C) 15 V. D) 20 V.
50 Volts
V = I x R = 5A x 10 ohm = 50 Volt
The slogan of hot pockets
"HOT POCKETS"
Rub electrons from your hair onto a comb and your hair becomes ________ charged
Remove electrons (-) and your hair becomes positively charged!
The current supplied by a 9V battery over 4.5 ohms of resistance in a light bulb. Include the unit for current.
Ohm's Law: I = V/R
2 Amps
The first evidence that electricity can cause magnetism was done by seeing a __________ twitch when a current was put through a wire.
(Hint: starts with "C")
compass
Ohm's Law: I = V/R
The current going through a light bulb with a voltage across it of 5V and a resistance of 5 ohms is
A. 1 Amp
I = V/R = 5/5 = 1Amp
Select one person in your group to beat others in rock em sock em robots.
Rock em sock em robots
Electrical force between charges is strongest when charges are
A. far apart
B.Close together
C.Either
B. Close together
Just as water flows from a region of high pressure to a region of low pressure, electric charge flows from a region of
A.High Electric Pressure to low electric pressure
B.Deep to shallow regions
C. High Resistance to Low Resistance
A.High Electric Pressure to low electric pressure
The condition that is required for magnetism to cause electricity.
The magnetic field must __________ relative to a wire.
Move!
For electric current in the home, your power company supplies
A) energy.
B) electrons.
C) both of these
D) neither of these
Beat Mr. Mellor in Rock Paper Scissors
Choose one of either rock, paper or scissors for your entire group and write it on your whiteboards.
Paper