Equipotential surfaces and the direction of the gravitational force Student activity Play

Equipotential surfaces and the direction of the gravitational force Whiteboard exercise Play

Equipotential surfaces in a field due to a point charge Whiteboard exercise Play

Equipotential surfaces in a field due to a point charge Student activity Play

Equipotential surfaces in a field due to a point charge Simulation Play

Equipotential surfaces in a field due to a point charge Animation Play

Example of reduction of fractions Animation Play

Excitability of the neurone plasma membrane Student activity Play

Excitability – a special feature of the neurone plasma membrane Student activity Play

Extraction of iron from ores in a blast furnace Animation Play

Extraction of metals from ores Student activity Play

Extraction of metals from ores Animation Play

Extraction of titanium Student activity Play

Extraction of titanium Animation Play

Falling down Animation Play

Flame probe Animation Play

Forms of energy Student activity Play

Forms of energy Animation Play

Forms of energy Whiteboard exercise Play

Formula for potential energy in electric field Animation Play

Forward bias and reverse bias Whiteboard exercise Play

Forward bias and reverse bias Student activity Play

Forward bias and reverse bias Animation Play

Fuel cells Student activity Play

Global warming: potential effects Student activity Play