Scientists
Allesandro Volta is best known for what invention?
The first Electric Battery or Voltaic Pile
A student has two balloons with equal charges (both + positive)on them. According to Coulombs Law will the balloons attract each other or repel?
They will repel. Like charges repel, opposites attract.
What is the most major difference between the electromagnetic force and the gravitational force?
Gravity can only attract objects, the Electromagnetic force can attract or repel objects.
Which scientist was responsible for unifying the theories of electricity and magnetism?
Hans Christian Orested
What can be done to a pair of charges to increase the strength of the force between them?
Bigger Charges or Smaller distance of separation
James Clerk Maxwell is best known for formulating a series of equations that had people describing him as the Newton of what area of physics?
Electromagnetism
Charles Augustin de Coulomb is best known as a scientist for discovering what became known as Coulomb's Law. What does Coulomb's Law describe?
The strength of force between electric charges
What is the strength of the electrical force between two charged objects if both objects have a charge of 3.7E-6 Coulombs and they are 0.2M apart from each other?
3.08 N
Last class you built an electromagnet using some copper wire, an iron core(nail), and a battery, and once without the iron core. What could you do to make a stronger electromagnet?
More wire, stronger battery (more electric current), use an iron core
Henry Cavendish did research involving the conductivity of different solutions. His discoveries led to a better understanding of what?
Electrical Resistance/Ohm's Law of Resistance
Two charged balloons, one with a charge of -1.9E-7C and the other with a charge of -2.4E-3C are placed 2m apart with an insulator between them. What is the strength of the force between them?
1.026 N
You built (or saw) a small electric motor demonstrated in class. What interaction allows the motor to work?
Magnets and current carrying wire (electricity in the wire)
Which scientist did the "Oil Drop" Experiment and determine that all electrical charges are multiples of 1.6E-19 coulombs?
Robert Millikan
Two charged spheres are set 2 meters apart and attract each other with a force of 27N. What will be the new force of attraction if they are moved to be only 1 meter apart?
108 N
Last class you recreated Hans Christian Orested's experiment with wires and compasses. What did Orested accidentally discover during that experiment?
The connection between electricity and magnetism.