Current: A flow of charges. They might be electrons, protons, ionized particles or any other form of charges. 

Potential difference: This is a measurement of difference in amount of unit charge densities between two places. Potentially different charges in two different places creates a flow of charges between two places if there is a path, a current.

Physics

What is the difference between potential difference and current?

Here are 3 examples:

The pupil reflex in the eye - the iris muscles adjusts the pupil diameter. The diameter becomes wide in dim light and narrows in bright light. 

The knee jerk - the lower leg kicks forwards after tapping the tendon just below the knee cap. 

Sweating - An increase in body temperature causes you to sweat. This is done to cool the body down. 



Science

List examples of a reflex action

It depends how long the run is! Try asking another question but also mention the length. For example, is it 200 metres? 

Sports

What times do under 14 boys get in hurdles?

The best way to prepare for the UKCAT is lots and lots of practice!

I used and would recommend two resources: Medify and the ISC Medical UKCAT Practice Questions Book.

Medify is a really good way to familiarise yourself with the structure of the exam. It feels very similar to the real thing and has the same keyboard shortcuts.

The ISC Medical book is probably slightly harder than the real thing but is still good practice.

Give yourself plenty of time to practice before the test!

If you need any more help feel free to message me 😁

Qasim Munye

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Qasim Munye