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Episode 215: Forces on Vehicles

In this learning episode, from the Institute of Physics, students look at the forces involved when one vehicle impacts another object. This can be used to illustrate the forces, acceleration and deceleration involved. It considers the effect of the distance over which a force acts rather than the time of action of...

Episode 106: Electrical Power

From the Institute of Physics, in this learning episode, students calculate electrical power and through discussion, review their understanding of: • current • potential difference • electromotive force (emf) • charge • drift velocity Students are reminded of the idea that power is the rate of doing work (or the...

Episode 115: Energy and Power

In these activities, from the Institute of Physics, the concept of electrical power is explored. Students find that the energy transferred by an electrical component depends on the potential difference, current and the time for which it operates.

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Episode 123: Alternating Current

Produced by the Institute of Physics, this learning episode helps students to distinguish alternating from direct currents before revising why alternating current (ac) is so important.

The range of activities include...

Episode 128: Energy Stored by a Capacitor

Produced by the Institute of Physics, this learning episode looks at the energy stored in a capacitor. Students undertake a practical investigation to look at the energy stored and how this varies with potential difference and capacitance.

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Episode 202: Forces in Equilibrium

Produced by the Institute of Physics, this learning episode contains demonstrations and practical activities through which students learn about the conditions for static equilibrium (excluding moments of forces).

Students look at:
• forces on a horizontal washing line with a weight in the middle...

Episode 209: Drag, Air Resistance, Terminal Velocity

Produced by the Institute of Physics, this learning episode considers the forces acting on a falling body in air and moves on to related experimental work.

The activities include:
• demonstrating the motion of...

Episode 222: Impulse of a Force

This learning episode, from the Institute of Physics, uses demonstrations and worked examples to examine the forces involved in changing momentum. It introduces the concept of impulse.

The activities in the learning episode include:
* showing that impulse equals change in momentum
* a...

Episode 104: Drift Velocity

From the Institute of Physics, this learning episode shows that charge carriers in good conductors usually move very slowly. It illustrates the derivation and use of the equation I = nAvq.

A range of activities include:
• viewing the movement of permanganate ions in an electric field
•...

Episode 108: Resistance

From the Institute of Physics, this learning episode provides a quantitative definition for resistance (R = V / I) which reinforces the qualitative notion that more resistance means less current. It looks at Ohm’s law, describing that this is not the same thing as the definition of resistance.

Activities...