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the magnitude of the force
between charge q(A) and charge q(B), seperated by a distance r, is
proportional to the magnitude of the charges and inversely proportional
to the square of the distance between them.
a closed loop pathway that allows
for current to flow from a power source, through an electrical element,
and back to the power sources - current can only flow within a closed
loop circuit due ot the fact that it must return to the power source
occurs when a circuit with a very
low resistance is formed - the low resistance causes the current to be
very large, and when appliances are connected in parallel, each
additional appliance placed in operation reduces the equivalent
resistance in the circuit and increases the current through wires. The
additional current might produce enough thermal energy to melt the
wiring's insulations, cause a short circuit, or even begin a fire.