About resistance Quiz

easy 5 Questions
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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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