Listing all results (140)

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...

Publication date:
2000 - 2009

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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.

The activities include:
• demonstrating energy use with a...

Publication date:
2000 - 2009

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Episode 117: Kirchhoff’s Laws

From the Institute of Physics, this learning episode links Kirchhoff’s circuit laws to the conservation of charge and energy. Students can verify the laws experimentally and use them to solve simple circuit problems.

This learning episode involves the following activities:
• demonstrating the...

Publication date:
2000 - 2009

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Episode 120: Energy Transfer in Electric Circuits

Produced by the Institute of Physics, this learning episode can be used to revises the idea of electromotive force (emf), introduce internal resistance and the consequent energy losses.

The activities include:
• revising ideas about energy in circuits to check and reinforce students’ basic ideas about...

Publication date:
2000 - 2009

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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:
• demonstrating the output of a generator
• measuring alternating current with a...

Publication date:
2000 - 2009

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Episode 125: Introducing Capacitors

In this learning episode from the Institute of Physics, students are introduced to capacitors. Through practical investigations, students look at their charge and discharge process.

The activities include:
• demonstration of a 'super capacitor' using large sheets of aluminium foil and polythene
•...

Publication date:
2000 - 2009

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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.

The activities include:
• energy transfer - using a capacitor...

Publication date:
2000 - 2009

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Episode 530: X- ray Diffraction

This learning episode, from the Institute of Physics, uses laser light to demonstrate the phenomenon of diffraction and then applies this understanding to x-rays, Bragg's law and crystallography.

The activities in this episode look at:
• students’ knowledge of X-rays
• diffraction and the limits...

Publication date:
2000 - 2009

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Episode 539: Deep Inelastic Scattering

In this learning episode, from the Institute of Physics, students use an analogue experiment to illustrate electron scattering by quarks. In the model, magnets are concealed in a box. Their poles represent ‘charges’ which are probed using a freely-suspended magnet. This helps to demonstrate that each of the...

Publication date:
2000 - 2009

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Episode 509: Radioactive Background and Detectors

From the Institute of Physics, this learning episode introduces the ubiquitous nature of radioactivity and considers its detection. It draws on students’ previous knowledge, and emphasizes the importance of technical terminology.

The activities include:
• demonstrating the detection of background...

Publication date:
2000 - 2009

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