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Important Questions: Electrical energy and power, electrical resistivity and conductivity for JEE

30+ syllabus-aligned questions available

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The most important Electrical energy and power, electrical resistivity and conductivity questions for JEE cover conceptual traps, standard results, and numerical patterns from Electrical energy and power, electrical resistivity and conductivity. Goodmarks provides 30+ high-yield MCQs with full solutions.

Focus on what matters most. These important Electrical energy and power, electrical resistivity and conductivity questions cover high-weightage concepts from Electrical energy and power, electrical resistivity and conductivity — the topics JEE repeats every year.

Syllabus context

Part of Current Electricity in JEE Main Physics.

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Q1PhysicsUnit 12: Current Electricity
In the circuit shown, the heat produced in 5Ω5 \Omega resistor is 10 calorie/sec. The heat produced/sec in 4Ω4 \Omega resistor will be :
Q2PhysicsUnit 12: Current Electricity
Q Type your question- and of fixed emf, the resistor R1\boldsymbol{R}_{1} has fixed resistance and the resistance of resistor R2\boldsymbol{R}_{2} can be varied (but R2\boldsymbol{R}_{2} is always nonzero). Then the electric power delivered to the resistor of resistance R1R_{1} is independent of the value of resistance R2\boldsymbol{R}_{2} Reason f potential difference across a fixed resistance is unchanged, the power delivered to the resistor remains constant.
Q3PhysicsUnit 12: Current Electricity
The most important safety method used for protecting home appliances from short circuiting or overloading is
Q4PhysicsUnit 12: Current Electricity
The electrical energy in kilowatt hours consumed in operating ten 50 W50 ~ W bulbs for 10 hrs/day in a month of 30 days is
Q5PhysicsUnit 12: Current Electricity
The Joules heating effect for an electric heater in A.CA . C and in D.C. circuit is
Q6PhysicsUnit 12: Current Electricity
The heat developed in a system is proportional to the current through it. Then
Q7PhysicsUnit 12: Current Electricity
A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be:
Q8PhysicsUnit 12: Current Electricity
P=V2RP=\frac{V^{2}}{R} is applied when

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What makes a Electrical energy and power, electrical resistivity and conductivity question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Current Electricity are high-weightage?

Key areas include Electrical energy and power, electrical resistivity and conductivity. Prioritise these before moving to edge cases.

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Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

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