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Resistance and Resistivity for GSEB: 9 solved questions

Real GSEB paper questions on resistance and resistivity, part of current electricity. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2015 to 2022. No sign-in needed to read them.

What this topic asks

• Resistance of a wire and stretching — 3 questions
• Temperature dependence of resistance — 3 questions
• Ohm's law and resistivity — 3 questions

All 9 questions with solutions

• A resistive wire is stretched till its length is increased by 100%. Due to the consequent decrease in diamete… GSEB Board July 2015
• At what temperature would the resistance of a copper conductor be double its resistance at 0°C? Given: α for… GSEB Board July 2017
• A wire is uniformly stretched so that its area of cross-section becomes 1/n times the original (n>0). What wi… GSEB Board March 2018
• The unit of conductance of the material of the given conductor is _. GSEB Board March 2019
• According to Ohm's law, R=V/I. As the current flowing through a conductor increases, the resistance of the co… GSEB Board March 2020
• A resistive wire of resistance 10 Ω is stretched to increase its length by 100%. Due to the consequent decrea… GSEB Board March 2020 (old course)
• The resistance of the platinum wire of a platinum resistance thermometer at the ice point is 5 Ω and at the s… GSEB Board August 2020
• According to Ohm's law, the electric current I passing through a conductor is increased in such a way that th… GSEB Board July 2021
• The value of the temperature coefficient of resistivity (α) is for metals. GSEB Board March 2022