- Magnetism and Magnetic Field Lines, An Explanation
- Why are Magnets Magnetic, An Explanation
- Magnetic Field from a Current Carrying Wire, An Explanation
- Magnetic Field from a Current Carrying Wire, Calculations
- Magnetic Field from a Coil (Solenoid), An Explanation
- Magnetic Field from a Coil (Solenoid), Calculations
- Lorentz Force, Right Hand Rule, Direction of the Force on a Charged Particle
- Lorentz Force, Calculate Magnitude of the Force on a Charged Particle
- Force on a Current Carrying Wire
- Force Due to Parallel Current Carrying Wires, Currents in the Same Direction
- Force Due to Parallel Current Carrying Wires, Currents in the Opposite Directions
- Lorentz Force on a Charged Particle, Circular Path
- The Motor Principle

## RC and RL Circuits

- RC Circuit Analysis No. 1
- RC Circuit Analysis No. 2
- RC Circuits No. 3, Charging and Discharging a Capacitor, with PhET Simulation
- RC Circuits No. 4, Time Constant, Voltage and Current for Charging a Capacitor
- RC Circuits No. 5, Charging a Capacitor, Voltage and Current, Worked Example
- RC Circuits No. 6, Time Constant, Voltage and Current for Discharging a Capacitor
- RC Circuits No. 7, Discharging a Capacitor, Voltage and Current, Worked Example

- RL Circuit Analysis No. 1, Voltages and Currents
- RL Circuit Analysis No. 2, Voltages and Currents
- RLC Circuit Analysis No. 3, Voltage, Current and Charge
- RL Circuits No. 4, Inductor Charging & Discharging, An Explanation, Part 1
- RL Circuits No. 5, Inductor Charging & Discharging, An Explanation, Part 2
- RL Circuits No. 6, Charging an Inductor, Time Constant, Voltage, Current, An Explanation
- RL Circuits No. 7, Charging an Inductor, Time Constant, Voltage, Current, Worked Example
- Comparing RC and RL Circuits, Voltage and Current

## Gravitation

- Mass vs Weight, An Explanation
- Newton’s Law of Universal Gravitation, An Explanation with Examples
- Gravitation and Weight, Calculate Your Weight Two Different Ways
- Calculating the Acceleration Due to Gravity
- Calculating the Orbital Velocity of Satellite
- Calculating the Orbital Period of a Satellite
- Calculating the Orbital Height of a Satellite
- Geosynchronous vs. Geostationary Orbits
- Gravitational Potential Energy for Objects Far from Earth, An Explanation
- Gravitational Potential Energy at the Surface of the Earth
- Gravitational Potential Energy of an Object Orbiting the Earth
- Work Done to Lift an Object into Around the Earth
- Orbital Velocity at the Surface of the Earth
- Total Mechanical Energy of a Satellite Orbiting the Earth
- Energy Needed to Put a Satellite into Geostationary Orbit
- Escape Velocity, An Explanation
- Gravitation and Conservation of Mechanical Energy