Changing Models of the Nucleus John Dalton’s Model (1803) Dalton imagined that all matter was made of tiny solid particles called atoms Dalton’s model proposed: Atoms are the smallest consti...
Rutherford Scattering Evidence for the structure of the atom was discovered by Ernest Rutherford in the beginning of the 20th century from the study of α-particle scattering The experimental...
Inefficiencies in a Transformer Inefficiencies in a transformer appear not from just the core, but also in the wires The coils of wire have resistance This causes heat energy to be lost from...
Transformer Efficiency In reality, transformers are not 100% energy efficient This means their power output is less than the power input For an ideal (100% efficient) transformer, the...
The Transformer Equation A transformer is A device that changes high alternating voltage at low current to low alternating voltage at high current, and vice versa This is designed to reduce ...
Oscilloscope as a DC & AC Voltmeter A Cathode-Ray Oscilloscope (CRO) is a laboratory instrument used to display, measure and analyse waveforms of electrical circuits It can therefore be used as...
Sinusoidal & Root-Mean-Square Current & Voltage An alternating current (a.c) is defined as: A current which periodically varies between a positive to a negative value with time This ...
Required Practical: Investigating Flux Linkage on a Search Coil Aims of the Experiment The overall aim of this experiment is to determine how the magnetic flux linkage varies with the angle ...
Moving Conductors in a Magnetic Field Similar to a coil or a solenoid, a straight conducting rod moving through a magnetic field will also have an e.m.f induced in it This is only when the c...
