About resistance Quiz
easy
5 Questions
Question 1 of 5
What is the unit of measurement for electrical resistance?
Resistance is measured in Ohms, named after Georg Ohm.
Question 2 of 5
Which of the following materials generally offers the *least* resistance to the flow of electricity?
Copper is an excellent conductor, offering low resistance. Rubber, wood, and glass are insulators.
Question 3 of 5
If the voltage across a resistor is doubled, and the resistance remains constant, what happens to the current flowing through it?
According to Ohm's Law (V=IR), doubling the voltage doubles the current, assuming resistance is constant.
Question 4 of 5
What is the primary factor affecting the resistance of a wire?
Resistance depends on the material (resistivity) and the wire's length and cross-sectional area.
Question 5 of 5
A resistor color code reads: Brown, Black, Red. What is the approximate value of the resistor?
Brown = 1, Black = 0, Red = x100. 10 * 100 = 1000 Ohms (1k?)
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