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Science
Engineering
Electrical Engineering
Final Psych 1101
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Terms in this set (19)
To keep the flow going, one would have to maintain a __________ between two points.
This quantity is also called _________or ________.
1. potential difference
2. voltage
3. EMF
Charged particles flow around a closed loop called a ________ _______.
closed circuit
The rate of flow of electric charge or _________ _______ is measured in ___________ ___ ______.
It is the amount of charge transferred per unit time.
1. electric current
2. coulombs per second
The flow of one coulomb per second is called an ________
ampere
A device that measures current is called an __________
ammeter
The property which opposes the flow of electric current is called ___________
resistance
The formula for resistance is (Ohm's Law) ______.
Resistance is measured in _______
1. R= V/I
2. ohms
A _______ diagram uses symbols rather than pictures for components
schematic
Although electric companies are often called "power" companies, they really provide ____________.
energy
The kilowatt hour is a unit of ___________, which is calculated by multiplying _______ x _____.
1. energy
2. kilowatts
3.hours
The kilowatt (or watt) is a unit of _________ while the kilowatt hour (or watt second) is a unit of _________.
power
energy
_____________ pushes electricity along a wire
Voltage
According to Ohm's Law, current is ________ proportional to voltage and ________ proportional to resistance
directly
inversely
A ______ _______ produces a large current due to faulty wiring which could cause a fire.
This is why a _______ or _______ _______ is important in our homes.
short circuit
fuse
circuit breaker
Power is the rate of doing work or the rate of converting _____________ ___________ into other forms of energy
electric energy
If you increase voltage in a circuit what happens to the current in the circuit?
Voltage and current are directly proportional,
so if you increase voltage the current will
If you increase resistance in a circuit what happens to the current in the circuit?
Resistance and current are inversely proportional, so if resistance goes up then the current will go down. (increase and decrease)
What is the difference between a DC current and an AC current?
DC current:
- "direct current"
- current that flows in one direction
- what is supplied by a battery
AC current:
- "alternating current"
- current that alternates direction
- what is supplied by the electric company
Explain what is happening in the picture.
AC travels in many routes
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