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The photoelectic effect is when photoelectrons are released from a metal that light is incident upon. The photoelectrons are only emitted when the photons of light are above a certain threshold frequency ...
First we must decide how we can begin to solve the problem. With problems such as these it is best to split the velocity into a vertical and horizontal component. To do this we construct a triangle, this ...
The photoelectric effect refers to the emmision of electrons from a surface, usually a metal, as a result of shining light (EM radiation). The light is absorbed by the electrons on the surface and thus th...
This may at first look like a horrible SUVAT problem, but it is actually testing your ability to calculate energy transfers. It is helpful for these questions to first draw a diagram then work out what en...
An ohmic resistor is a resistor that obeys Ohm's law V = IR (voltage = current x resistance). Therefore, if the voltage in such element is increased by n number of times, by the same number n has to incre...
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