Shared Flashcard Set

Details

IMA
Chapter 4
20
Other
Not Applicable
09/09/2005

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Cards

Term
All _____ have at least three particles.
Definition
atoms
Term
Electrons have what kind of charge?
Definition
Negative
Term
Protons have what kind of charge?
Definition
Positive
Term
Natural magnets are found in the earth, and are called __________.
Definition
loadstone
Term
Which particles are found in the nucleus of the atom?
Definition
Neutrons and protons
Term
A magnetic field will attract a particle with a(n) _______ charge.
Definition
opposite
Term
A magnetic field will repel a particle with a(n) ________ charge.
Definition
like
Term
True / False

All magnetic fields have two poles, a north and a south.
Definition
False
Term
A stream of moving electrons is called a(n) ___________.
Definition
electromagnet
Term
What is the name for an electrical current that flows in two directions?
Definition
AC
Term
What is the name for an electrical current that flows in only one direction?
Definition
DC
Term
_____ is the easiest type of current to produce in large amounts.
Definition
AC
Term
Which property of electricity is measured in watts?
Definition
Power
Term
Which property of electricity is measured in amps?
Definition
Current
Term
Which property of electricity is measured in volts?
Definition
Electromotive force
Term
Which property of DC electricity is measured in ohms?
Definition
Resistance
Term
Which property of AC electricity is measured in ohms?
Definition
Impedance
Term
____________ are used to step AC voltage up or down.
Definition
Transformers
Term
________ are devices used in a circuit that can serve as amplifiers, detectors, or switches.
Definition
Transistors
Term
_________ are used to temporarily store electricity in a circuit.
Definition
Capacitors
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