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Applied physics practice test MCQ: specific resistance of a wire can be measured by formula with options r/l, ra/l, rl/a and a/rl for scholars competing for college and universities' scholarships with college board and MCAT practice test. Free study guide is for online learning resistance and resistivity quiz questions with MCQs to practice test questions with answers. Resistance and Resistivity Video

MCQ: Specific resistance of a wire can be measured by formula

1. R/L
2. RA/L
3. RL/A
4. A/RL

B

MCQ: Fractional change in resistance per kelvin is known as

1. temperature constant
2. resistance coefficient
3. temperature coefficient
4. resistance constant

C

MCQ: SI unit of conductivity of material is

1. Ω m
2. Ω
3. Ω-1m
4. Ω-1m-1

D

MCQ: Wire having resistance of 10 Ω at 0 °C and 20 Ω at 273 °C will have temperature coefficient of

1. 4.66 × 10-3 per K
2. 3.66 × 10-3 per K
3. 3 × 10-3 per K
4. 6.6 × 10-3 per K

B

MCQ: Current of 0.75 A, when a battery of 1.5 V is connected to wire of 5 m having cross sectional area 2.5 × 10-7 m², will have resistivity

1. 1 × 10-7
2. 1.1 × 10-7
3. 2 × 10-7
4. 2.1 × 10-7

A