Current Electricity: Class 12 Physics (CBSE) important questions and practice
Current Electricity is chapter 3 of 14 in CBSE Class 12 Physics. Below are the topics the paper draws from, the question types that come up again and again, and a free practice test on this chapter alone.
Topics in this chapter
- Electric current, drift velocity and relation with current
- Ohm's law, resistivity and temperature dependence of resistance
- Combination of resistors; cells, EMF, internal resistance and combination of cells
- Kirchhoff's rules and their applications
- Wheatstone bridge and its balance condition
- Potentiometer and meter bridge (removed in CBSE; retained in some state boards)
What examiners usually ask
- Derive the relation I = neAv_d between current and drift velocity
- State Kirchhoff's rules and use them to obtain the balance condition of a Wheatstone bridge
- Two cells of EMF 1.5 V and 2 V with internal resistances 1 ohm and 2 ohm are connected in parallel; find the equivalent EMF and internal resistance
Exam tip
The drift velocity derivation and Wheatstone bridge balance condition using Kirchhoff's rules are the two derivations most often asked; in circuit numericals mark the current direction first and apply the loop rule with consistent signs.
Current Electricity on other boards and exams
Frequently asked questions
What are the important questions from Current Electricity for CBSE Class 12?
The question types listed above repeat most often in CBSE Class 12 Physics papers for this chapter. Practise them with the chapter test and then attempt them inside a full previous-year paper under time.
Is Current Electricity in the CBSE Class 12 Physics syllabus?
Yes. Current Electricity is part of the current CBSE Class 12 Physics syllabus, as listed on this site from the prescribed textbook.
Can I practise Current Electricity MCQs in Hindi?
Yes. The chapter test and explanations are available in Hindi and English, with an AI doubt solver for any question.