Types of Electric Charge
Charging by Friction, Conduction, and Induction
Conductors and Insulators
Electric Force
Electric Fields
100
They are the negatively charged particles in a material.
What are electrons?
100
The charge on an electroscope if it is touched by a positively charged object is
And this is charging by...
What is a positive charge?
What is charging by contact.
100
A material that can easily transfer electrons from atom to atom.
What is a conductor?
100
A device demonstrated in class that separates a large amount of charge.
What is a Van De Graaff generator?
For fun
100
How are gravitation field and electric field different?
Electric can be attracted or repulsed....gravitation field is only attractive.
200
The list of materials that indicates a material's tendency to gain or lose electrons.
What is the electrostatic series or tribo-electric series?
200
When a negatively charged object is brought near the ball of an electroscope, this is charging by....
charging by inducing a charge...
200
It is an isolated conductor with a sharp point located at the top of tall buildings. To prevent damage from lightning...
What is a lightning rod? Or grounding rod
(Just for fun)
200
The effect on electric force when charged objects are moved away from each other.
What is a decrease by 1/d2 in electric force?
200
It reduces friction on the clothes in the dryer.
What is fabric softener?
300
These kinds of charges attract.
What are different/opposite charges?
example +/- +/Neutral -/Neutral
300
It is the charge on the cotton after rubbing nylon(high on positive side of series) and cotton together.
This is charging by....
What is a negative charge?
Charge by friction.
300
When a negatively charged plastic ruler is brought near the ball of an electroscope, this is the charge on the metal leaves.
What is negative?
300
A 0.0009 kg balloon with a charge of -75x10-9C that is located a distance of 12 cm above a plastic tube that has a charge of -83 x10-9C.
F=
F= +.0039N
300
Two (2)
400
The charge on an object with fewer electrons than protons.
What is a positive charge?
400
You shuffle across the carpet and when you touch the metal doorknob you feel a shock. It's what causes the shock.
What is a transfer of electric charge from charge by friction?
400
A substance in which the electrons are tightly bound to the atoms and cannot freely move to neighbouring atoms.
What is an insulator?
400
Two ways to increase electric force.
What is decreasing distance or increasing charge?
400
A negatively charged rod (I) is placed near, but not touching, two other metal rods that are initially uncharged.
The distribution of charge on rod III is such that
P is more +
Q is more -
500
Famous scientist who proved that lightning is an electrical discharge.
Who is Benjamin Franklin?
(this one is Just for fun)
500
A negatively charged object is brought near the left side of a metal sphere. A grounding wire is attached to the right side of the metal sphere. Later, the negatively charged object and the grounding wire are removed. This is the charge left on the metal sphere.
We call this charging by....
What is a positive charge, charging by induction?
500
When a metal sphere is given a charge, the charge spreads out evenly over the surface of the sphere. It is the cause of this.
What is the repulsion of like charges?
500
A large metal sphere (X) holds +6 µC of charge. It is touched momentarily to an identical NEUTRAL metal sphere (Y). Which directions will the electrons travel?
What is from Y to X?
500
What are the charges on A and B for this electric field
A -
B +