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1. The fundamental building block
of all matter is the:
X atom.
molecule.
crystal.
2. Identity 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 B. Electrical pressure.
Voltage C. Opposition to current flow in a conductor.
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
Voltage E VOLTS
Current I AMPERES
Resistance R OHMS
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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