Class 12 Physics — Chapter 3: Current Electricity
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 12 Physics, Chapter 3 (Current Electricity). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
The SI unit of resistivity (ρ) is:
R = ρL/A ⇒ ρ has units of ohm × metre.
A cell of emf ε and internal resistance r drives current I through external resistance R. The terminal voltage is:
Some emf is dropped across internal resistance; V = ε − Ir.
In a Wheatstone bridge, the bridge is balanced when:
Balance condition: P/Q = R/S (no current through galvanometer).
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