**Electricity from water power (Physics (11-14) eBook)**

Use a simple water wheel to make electricity via generator. Monitor the voltage and or current over time against other variables e.g. flow, fall height etc.

**Light and voltage (Physics (11-14) eBook)**

Investigations with simple solar cells. Voltage produced, current, effect of light intensity, insolation angle etc.

**Current and voltage in a series circuit (Physics (11-14) eBook)**

This one of a series of investigations into current in a circuit. This part requires additional lamps and or cells to be added and the changes measured.

**Electrical Equivilence Of Heat (Physics (14-18) : Electricity & Heat eBook)**

The experiment is very simple and compares the power generated in heating a resistance coil to the heat energy transferred to the water. Measurements are made in Joules to emphasise the transfer of energy.

**Stefan - Boltzmann law. (Physics (14-18) : Electricity & Heat eBook)**

The experiment illustrates the Stefan - Boltzmann law. It does not give a value for the Boltzmann constant. A simple tungsten filament automotive lamp is used as the source of thermal radiation. The investigation tests if the radiation is really to the 4th power of temperature.

**Calibration of a thermometer (Seebeck effect) (Physics (14-18) : Electricity & Heat eBook)**

In the investigation two junctions are used, one is placed in a constantly cold temperature the other has varying temperatures applied to it.

**Specific heat capacity of a solid (Physics (14-18) : Electricity & Heat eBook)**

This investigation will measure the specific heat capacity of a solid. A block of metal of known mass is heated by an electrical heater through a known number of degrees. The electrical energy required to create this temperature rise is determined and used to find the specific heat capacity.

**Specific heat capacity of a liquid (Physics (14-18) : Electricity & Heat eBook)**

This investigation will measure the specific heat capacity of a liquid (water). A sample of water of known mass is heated by known number of degrees by an electrical heater.

**What changes the current in a circuit? (Physics (14-18) : Electricity & Heat eBook)**

Simple (revision) exercise to see how the number of cells in circuit changes the current.

**What changes the current in a circuit (Physics (14-18) : Electricity & Heat eBook)**

Alternative exercise using snapshot to collect data instead of reading values off a meters screen.

**Good and bad conductors (Physics (14-18) : Electricity & Heat eBook)**

This activity is a standard practical comparing current flow with different materials in a circuit. Strips of different conductors and insulators are provided for the pupils. Conductors are anything that let a current flow.

**Connecting resistors (Physics (14-18) : Electricity & Heat eBook)**

Shows the current in circuit with different resistor values and combinations. Leads to resistor calculations.

**Current and voltage (Physics (14-18) : Electricity & Heat eBook)**

Introductory activity to explore the relationship between current and voltage with an ohmic conductor. In this variant changes in voltage and current are measured against time.

**Current and voltage (Physics (14-18) : Electricity & Heat eBook)**

Introductory activity to explore the relationship between current and voltage with an ohmic conductor. In this variant changes in voltage and current are plotted directly against each other, leading into characteristics of conductors / components.

**Simple series circuits (lamp resistors) (Physics (14-18) : Electricity & Heat eBook)**

The effect of a component offering electrical resistance in circuit is revised.

**Ohms Law (Physics (14-18) : Electricity & Heat eBook)**

A study of Ohm's law for resistors. Collects data graphically against time to allow the students to change plot to voltage vs current.

**Ohms law current vs voltage plot (34a) (Physics (14-18) : Electricity & Heat eBook)**

Activity set up to let the software plot voltage vs current directly. Opens the possibility of more investigation of the relationship between voltage and current and the type of resistance. Resistance can also be calculated and plotted.

**Electrical characteristics (LED, resistor and filament lamp) (Physics (14-18) : Electricity & Heat eBook)**

Create voltage current curves for LED, resistor and filament lamp. This worksheet assumes all three curves in one teaching session. 35a and 35b restrict to fewer devices per session.

**Electrical characteristics (resistor and filament lamp) (Physics (14-18) : Electricity & Heat eBook)**

Specific worksheet to produce voltage current curves for a resistor and filament lamp (ohmic and non ohmic resistance)

**Capacitors: charge stored. (Physics (14-18) : Electricity & Heat eBook)**

Collect voltage and current data during a capacitor charge and discharge cycle. Use built in tools to find the energy transferred and stored.

**Efficiency of an electric motor / generator (Physics (14-18) : Electricity & Heat eBook)**

The efficiency of a motor / generator is determined. This worksheets has details of the motor and generator calculations and method

**Efficiency of an electric generator (Physics (14-18) : Electricity & Heat eBook)**

Determines the efficiency of a generator. Uses a falling mass as the energy source and records voltage and current to produce power curves.

**Efficiency of an electric motor (Physics (14-18) : Electricity & Heat eBook)**

uses a known mass lifted through a known distance compared to the power required by a motor to lift the mass.

**Efficiency of a transformer (Physics (14-18) : Electricity & Heat eBook)**

Simple experiment to measure volts in and volts out. Data collected can be used to show phase match / difference and power in and power out.

**Diodes: ac rectification (Physics (14-18) : Electricity & Heat eBook)**

In this investigation, you will find out how diodes are used as rectifiers, and learn about the basic circuits in use in rectifier circuits.

**Diodes ac bridge rectification (Physics (14-18) : Electricity & Heat eBook)**

discover and investigate how diodes are used as rectifiers, and learn about the basic circuits in use in rectifier circuits. Conversion of an ac current to dc.

**Input characteristic of a transistor (Physics (14-18) : Electricity & Heat eBook)**

This investigation is going to study the input characteristics of the transistor across the B–E terminals by applying an alternating voltage, and measuring the voltage across and the current flowing through the B-E junction.

**Transistor as a switch and current amplifier (Physics (14-18) : Electricity & Heat eBook)**

This investigation will show the students that, 1. The base voltage controls the collector emitter current. 2. A small change in the base voltage causes a large change in the collector voltage. 3. The use of this change in the collector voltage to provide switching. Amplification of current is also considered.

**Reactance and phase in a capacitor (Physics (14-18) : Electricity & Heat eBook)**

You are going to measure the current through and voltage across the capacitor at different frequencies. From the data, you will calculate the reactance Xc of the capacitor at different frequencies.

**Impedance and phase difference with frequency (Physics (14-18) : Electricity & Heat eBook)**

Investigate how, in a series C-R circuit, resistance and capacitance combine to affect the flow of an ac current.

**L-R circuits: How does Impendance change with frequency? (Physics (14-18) : Electricity & Heat eBook)**

The investigation will show: 1. How impedance of a series l-R circuit increases with frequency. 2. The formula for calculating impedance of a series L-R circuit

**Resonance In an LCR circuit (Physics (14-18) : Electricity & Heat eBook)**

To find the frequency at which the impedance becomes purely resistive - the resonant frequency.