10 minutes
8 minutes
Khan Academy
Khan Academy
Khan Academy
PelletierPhysics
PelletierPhysics
Khan Academy - 9 minutes
Khan Academy - 10 minutes
Crash Course Physics - 10 minutes
How does an accelerometer work?
Remember what we learned in Year 10?
Touchscreens work by detecting the electrical capacitance or pressure changes caused by a touch, then relaying that information to the device's operating system.
Capacitive touchscreens, the most common type, rely on the electrical properties of the human body to register contact, while resistive screens detect pressure applied to the screen surface.
Describe how a capacitor is constructed and what they do.
Define the capacitance of a capacitor.
Solve basic problems involving voltage, charge and capacitance.
Describe the factors that affect the capacitance of a capacitor.
Solve problems using the capacitor construction equation.
Calculate the time constant for RC circuits.
Sketch voltage and current graphs for capacitors that are charging and discharging.
Calculate the energy stored in a capacitor.
Describe where energy is stored within a capacitor.
Describe the properties of series and parallel capacitor networks.
Calculate the equivalent capacitance for parallel and series capacitor networks.
Solve combination capacitor network problems.