## Listing all results (157)

### 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...

### 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...

### 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...

### 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...

### 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...

### 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...

### 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
•...

### 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...

### Episode 411: Describing Magnetic Fields

Produced by the Institute of Physics, this learning episode uses demonstrations, experiments and questions to help students learn about electromagnetic fields. These consider their strength and direction.

The activities include:
• demonstrating the field around a permanent magnet
• field...

### Episode 412: Force on a Conductor in a Magnetic Field

In this learning episode, from the Institute of Physics, students look at how a magnetic field can be quantified by measuring the force on a conductor. It illustrates how Flemming's left hand rule can be used to find the direction of the force. The activities include:

• investigating the relationship...