Charges
Coulomb's Law
Electrical Current
Ohm's Law
Circuits
100
These allow electrons to flow freely from one atom to another
conductors
100
Electrostatic Force and Charge are ___________ proportional.
directly (proportional)
100
The rate at which an appliance converts electric energy to another form of energy. What is it measured in?
electric power; the watt
100
This is a component of an electrical circuit that opposes the flow of electrical current
a resistor
100
What are the two types of circuits?
series and parallel
200
These have a tiny mass and move around the outside of the nucleus
electrons
200
Coulomb's Law is very similar in form to this law.
Newton's Law of Universal Gravitation?
200
The unit which electric companies sell electrical energy to homes and businesses.
kWh
200
In series, the total resistance (Rtotal) of a circuit is given by this simple equation.
What is Rtotal = R1 + R2 + R3 +….
200
When electric cells are in parallel, the formula for total voltage (Vtotal) is this.
Vtotal = V1 = V2 = …..
300
These substances have electrons so tightly bound to the atoms that they are NOT free to move to a neighbouring atom.
insulators
300
The charge of an electron
negative
300
An _______ measures current and a ____________ measure voltage.
an ammeter and a voltmeter
300
As R increases, what happens to I
Current decreases
300
This circuit can take different routes to light a bulb
parallel circuit
400
Like charges __________. Opposite charges ________.
repel, attract
400
What is the charge of an atom that loses electrons?
positive
400
When connected to a 120-volt power supply, how much current exists in a light bulb that has a resistance of 240 ohms?
0.5 A
400
Which offers more resistance to the flow of charge, a thick wire or a thin wire?
thin wire
400
You want to create a simple series circuit. You have a 9 volt battery. You want to limit the current to 0.5 Amperes. If you were to use 3 identical resistors, what resistance must they have in order to meet these requirements?
they must all have a resistance of 6 Ω
500
Charging without touching is called charging by _________.
induction
500
The SI unit for charge
Coulomb
500
Electrical resistance in a wire depends on the wire’s A) conductivity B) length C) temperature D) all of the above
all of the above
500
This continuous flow of electric charge
electric current
500
This circuit will not light up the other bulbs if one is out of place or goes out
series circuit
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