AS OCR Physics Videos

General

Questions by Topic

2. Foundations of Physics

Physical Quantities and Units

Quantities vs Units

Estimating physical quantities

The greek alphabet

Nature of Quantities

Scalars vs vectors

Displacement vs distance

Adding vectors - graphically and mathematically

Subtracting vectors

Resolving vectors

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3. Forced and Motion

Motion

Speed, velocity and acceleration

Distance-time and speed-time graphs

Displacement-time and velocity-time graphs

Tricky points on s-t and v-t graphs

SUVAT equations of motion

Deriving the SUVAT equations

Solving SUVAT equations

Stopping, thinking and braking distances

Car safety features

Projectile motion (part 1)

Projectile motion (part 2)

Projectile motion (part 3)

The monkey and hunter example

Forces in Action

Force, mass, acceleration and newton's second law

Mass and weight

Centre of mass and graivty

Free body diagrams and objects on an inclined plane

Drag, air resistance and water resistance

Terminal velocity

The principle of moments

Torque of a couple

Pressure in liquids and fluids

Upthrust and archimedes' principle

Work, Energy and Power

Potential energy

Conservation of energy

Conservation of mechanical energy

Mechanical power

Materials

Springs in parallel and series

Elastic potential energy in springs

Stress, stain and young's modulus

Stress-stain graphs

Ductile and brittle materials

Behaviour of rubber

Momentum

Newton's first law

Newton's second law

Calculating net force and acceleration

Newton's third law

Linear momentum

Conservation of linear momentum

Impulse (and how to get a straw through a potato)

Elastic and inelastic collisions

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4. Electrons, Waves and Photons

Charge and Current

Intensity of current

Quantity of charge

Kirchhoff's first law

Conductors, insulators and semi-conductors

Circuit symbols

Potential difference vs electromotive force

Kirchhoff's second law

The volt and W=VQ

Energy gained by particles through a potential difference

Resistance and Ohm's law

Resistance and temperature

Resistance and cold temperatures (with liquid nitrogen)

IV Characteristics of resistors, lamps, diodes and LEDs

The light dependent resistor

The NTC thermistor

Electrical power

The kilowatt hour

Resistors in series

Resistors in parallel

How to make circuits that work every time

Internal resistance and how to measure it

Potential divider circuits

How to solve circuit problems

Waves

An introduction to waves

Wavelength, period, amplitude and phase difference

The wave equation

Reflection, refraction, diffraction and polarisation

Amplitude and intensity

The transverse nature of EM waves

Wavelengths and frequencies of EM waves

EM wave speed and refractive index

Polarisation of waves

Using microwaves to show polarisation

Refraction and snell's law

Total internal reflection and critical angle

Refraction extra points

Superposition of waves

Coherence and path difference

Phase and phase difference

Two source interference of waves

Young double slit experiment

Diffraction gratings

Standing waves on a string

Stationary waves on a string

Stationary waves in an open tube

Quantum Physics

The electronvolt

Finding the value of planck's constant

The photoelectric effect

Einstein's photoelectric equation

The de broglie wavelength and wave particle duality

Electron diffraction tube

Electron energy levels

Emission and absorption line spectra

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