Do you know what resistors
are mainly used for?
Type your answer in the box below:
They are mainly used to control current
and voltage within the circuit. Resistance
determines the current produced by a
given voltage. All electrical loads,
such as heating elements, lamps, motors,
transformers, etc., are resistors.
A term that has a similar meaning as
resistance is impedance
which is most used in calculations of
alternating current (AC) rather than
direct current (DC).
Mathematically, the resistance can be
realized according to the relationship
of the current through the element to
the voltage across the element. For
example, if the voltage across the element
is linearly proportional to the current
through it, we will call the element
a resistor.
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