7A
YOUR ANSWER:
Resistance is the opposition offered to the flow of electrons.
(From P1-5A)
Exactly! A resistor is a device or component used to introduce opposition to current flow in a circuit.
Resistors are designed to have specific amount of opposition to current flow, and may be of many different sizes
and shapes. The size and shape of a resistor will not determine its value however. One as small as 1 inch long
and 1/4 inch in diameter may vary in value from less than one ohm to as much as several million ohms. The
illustration below shows a few of the various resistors used in electrical and electronic circuits.
Which of the resistors below has the more resistance?
Resistor A.
Page 1-2B
Resistor B.
Page 1-13A
Cannot tell.
Page 1-17A
7B
YOUR ANSWER:
The type of material and the temperature.
(From P1-3B)
You have the right idea but you didn't go far enough. Remember, now, we said there were four factors
that determine the resistance of a conductor. They are the type of material used, the length, the cross-sectional
area, and the temperature. Now let's go back to Page 1-3B and read the question again.
1-7
IT0340
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