Resistivity Problems In Physics -Multiple Choice Questions Quiz

Interactive MCQs on “Resistivity Problems In Physics”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What property of a material determines its opposition to the flow of electric current?

(a) Conductance
(b) Resistivity
(c) Conductivity
(d) Resistance

Question 2: Which unit is used to express resistivity in the International System of Units (SI)?

(a) Ohms (Ω)
(b) Siemens (S)
(c) Ohm-meters (Ω·m)
(d) Amperes (A)

Question 3: Which material has the highest resistivity?

(a) Copper
(b) Silver
(c) Aluminum
(d) Glass

Question 4: The resistivity of a metallic wire depends mainly on what factor?

(a) Length of the wire
(b) Area of the wire's cross-section
(c) Temperature of the wire
(d) Color of the wire

Question 5: A wire has a resistivity of 1.6 x 10⁻⁸ Ω·m and a cross-sectional area of 2.0 x 10⁻⁶ m². What is the resistance of this wire if its length is 5.0 m?

(a) 2.0 Ω
(b) 4.0 Ω
(c) 8.0 Ω
(d) 10.0 Ω

Question 6: Which of the following statements is true regarding the resistivity of semiconductors compared to conductors?

(a) Semiconductors have higher resistivity than conductors.
(b) Semiconductors have lower resistivity than conductors.
(c) Semiconductors have the same resistivity as conductors.
(d) The resistivity of semiconductors depends on temperature only.

Question 7: When the temperature of a metallic conductor increases, what happens to its resistivity?

(a) It increases.
(b) It decreases.
(c) It remains constant.
(d) It becomes zero.

Question 8: Which of the following materials is commonly used for variable resistors due to its high resistivity and stability?

(a) Copper
(b) Aluminum
(c) Nichrome
(d) Silver

Question 9: In a wire with uniform cross-section, how does the resistance vary with its length?

(a) Resistance decreases with length.
(b) Resistance increases with length.
(c) Resistance remains constant with length.
(d) Resistance is inversely proportional to length.

Question 10: Which of the following materials would be the best conductor of electricity based on its resistivity value?

(a) ρ = 1.0 x 10⁻⁷ Ω·m
(b) ρ = 2.0 x 10⁻⁶ Ω·m
(c) ρ = 5.0 x 10⁻⁵ Ω·m
(d) ρ = 1.0 x 10⁻⁴ Ω·m