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1. The fundamental building block
of all matter is the
X atom.
molecule.
crystal.
2. Identify the elements of the atom to which the arrows are pointing in the drawing below.
ELECTRONS
NUCLEUS
3. The three factors that establish the characteristics of electricity are current, voltage
and resistance. Match each of these electrical terms with its definition.
Current - A. The action of electricity flowing through a conductor, such as copper
wire.
Resistance - C. Opposition to current flow in a conductor.
Voltage - B. Electrical Pressure
4. Listed in the left hand column
below are the three factors that characterise electricity. Complete the table by indicating how
each is measured and the letter used to symbolise each. Factor Standard Symbol Measured in
|
Factor |
Standard Symbol |
Measured in |
|
Voltage
|
E
|
VOLTS
|
|
Current
|
I
|
AMPERES
|
|
Resistance
|
R
|
OHMS
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5. Current, voltage, and resistance
are always in balance as defined by
Murphy's Law.
X Ohm's Law.
Einstein's Law.
6. Give the mathematical equation for Ohm's Law to find resistance.
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