TextbookLive · Chapter 11
Electricity
Learn an idea. Try it yourself. Find what to revisit.
After Learn: check your understanding →Try challenges, revisit weak ideas, and practise exam answers.
Learn Electricity
Electric current and circuit →Close the path. Measure charge. Discover current.
Electric potential and potential difference →Find work per coulomb. Connect a voltmeter.
Circuit diagrams →Read the symbols. Draw the connections.
Ohm’s law and resistance →Collect readings. Plot the graph. Change resistance.
Factors affecting resistance →Compare wires. Explore resistivity. Solve the examples.
Resistors in series →Move the meters. Add the voltages and resistances.
Resistors in parallel →Compare branches. Combine currents. Simplify circuits.
Heating effect of electric current →Explore heat. Discover Joule’s law. Protect a circuit.
Electric power and energy →Compare power and time. Calculate energy and cost.