4. Electric Circuits
Resistance, Resistivity, And Ohm’s Law — Quiz
Test your understanding of resistance, resistivity, and ohm’s law with 5 practice questions.
Practice Questions
Question 1
Which statement best describes electrical resistance in a circuit element?
Question 2
Which expression correctly states Ohm’s law for a resistor?
Question 3
A wire has length $L$ and cross-sectional area $A$. Which relation gives its resistance in terms of resistivity?
Question 4
A resistor has resistance $R = 6\ \Omega$ and current $I = 2\ \text{A}$. What is the voltage across it?
Question 5
If the voltage across a fixed resistor is doubled, what happens to the current through it?