Cells, Kirchhoff's Laws, Bridges and Potentiometer

Physics · Chapter 6 · Units 1-2: Electrostatics and Current Electricity

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Your path through this chapter

1
Visual lesson Beta
1. Part 1: Cells and Kirchhoff’s laws17 slides
2. Part 2: Bridges and the potentiometer18 slides
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Notes Beta
6 sections with key terms, formulas and exam tips.
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Flashcards Beta
30 cards for quick recall of key terms and facts.
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Practice
71 board-style questions with instant checks: Numerical 19, Multiple choice 18, Short answer 17, Assertion and reason 7.
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Chapter test Free
Short and long chapter tests in board pattern, with results and analysis.
- Chapter test (long) — Cells, Kirchhoff’s Laws, Bridges and Potentiometer · 40 marks · 100 min
- Chapter test (short) — Cells, Kirchhoff’s Laws, Bridges and Potentiometer · 20 marks · 50 min
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EMF as work done per unit charge; internal resistance; terminal potential difference V = E - Ir
Combination of identical cells in series, parallel and mixed grouping; cells of unequal emf in parallel (two) and in series (n)
Kirchhoff's junction and loop laws as conservation of charge and energy; sign conventions; simple circuits
Wheatstone bridge balance condition; metre bridge and measurement of unknown resistance
Potentiometer: principle, potential gradient and sensitivity; use as an ideal voltmeter
Potentiometer applications: comparing emfs of two cells; internal resistance of a cell