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Current is defined as 'the flow of electric charge'. It can be broken down into very simple system of electrons, who carry charge, moving around a circuit. Potential difference can be thought of the force...

Rutherford revolutionised the atomic model with this experiment. At that time, the general idea was that of JJ Thompson, the  "plum pudding" atomic model. Rutherford bombarded a sheet of gold wi...

The equation for finding the period of the wave is the reciprocal of the frequency 

hence th eperiod T =1/f

substitute this into the wave speed equation 

v=f x lambda

solve for...

The National Grid is how electricity is distributed from suppliers to consumers (commercial or private household). Power stations produce power in the region of Mega Watts (the order of millions of watts)...

The energy contained in a photon is given by the formula E = hf, where h is the Planck constant and f is the frequency of the photon. Since h = 4.110⁻¹⁵ eVs, f = E/h = 1.010^3<...