estimate energy bills – the cost of living
visitors this year: 57 This quick post is for anybody wondering how much money they need to put aside for energy. If you don’t use electricity for keeping warm, your summer and winter electricity...
Tagged: electricity
comparing the cost of fuels for heating
visitors this year: 904 I am the person who wants to know if using an electric fan heater in one room costs less than heating the whole house using gas*. At parties I can...
capacitor charge and discharge
visitors this year: 47 Capacitor charge and discharge The voltage & current of a capacitor are measured as it charges and discharges. Sensors allow a graph to be plotted as this happens. The effect...
current and voltage
visitors this year: 60 Current-Voltage relationships In this experiment the resistance of a lamp, resistor or diode is measured as the current is varied. Voltage and current sensors make the measurements while the software...
characteristics of a thermistor
visitors this year: 49 Thermistor characteristics The voltage & current of a thermistor are measured as its temperature changes. Sensors allow graphs of voltage and current to be plotted against time. Not only can...
heating effect of an electric current
visitors this year: 32 Heating effect of an electric current The temperature, voltage & current of a heating unit are measured over a period of time. This allows us to calculate the power of...
characteristics of a thermistor
visitors this year: 91 A thermistor is an electronic component whose resistance changes with temperature. The voltage and current of a thermistor can be measured as the temperature changes. Sensors allow you to take...
magnetic field in a coil
visitors this year: 76 You can ‘see’ magnetic fields using iron filings. You can measure the strength of magnetic fields using a magnetic field sensor connected to a computer. How, for example, does that...
current-voltage relationships
visitors this year: 38 In this experiment the resistance of a lamp, resistor or diode is measured as the current is varied. Voltage and current sensors make the measurements while the software plots the...
capacitor discharge
visitors this year: 25 The voltage and current in a circuit change when a capacitor charges and discharges. Computer sensors can measure these changes and software can plot a graph as fast as this...
types of battery 2
visitors this year: 26 Batteries or electrical cells are made using different substances. There are zinc dry-cells, alkaline cells and lead-acid accumulators. When you use them, the chemicals become exhausted at different rates. So...
types of battery
visitors this year: 57 Batteries are a handy source of power. You’ll know that there are different kinds of batteries, and maybe that some are good for some jobs, and some for others. But battery...
