5. Topic 5(COLON) Electricity and DC Circuits
Lesson 5.2: Resistance, Resistivity And I-v Characteristics — Quiz
Test your understanding of lesson 5.2: resistance, resistivity and i-v characteristics with 5 practice questions.
Practice Questions
Question 1
What is the resistance of a conductor if it has a resistivity of $2 \times 10^{-8} \: \Omega \cdot m$ and dimensions of length $0.5 \: m$ and cross-sectional area $0.01 \: m^2$?
Question 2
According to Ohm's law, what is the relationship between voltage ($V$), current ($I$), and resistance ($R$) at constant temperature?
Question 3
What happens to the resistance of a metallic conductor as its temperature increases?
Question 4
If a resistor in a circuit has a resistance of $5 \: \Omega$ and a current of $2 \: A$ flows through it, what is the voltage across the resistor?
Question 5
A thermistor shows a decrease in resistance with an increase in temperature. What type of thermistor is this?