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The Alternating Current Flowing through the Primary Coil of the Transformer Creates an Alternating Current in the Secondary coil. Explain how!

The alternating current creates an alternating magnetic field across the transformer. A magnetic field develops in the iron core of the transformer. This causes a potential difference to be induced across th...
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Answered by Arthur G. • Physics tutor
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State and explain two adaptations of a red blood cell?

Red blood cells have a biconcave disk shape, meaning that it increases their surface area and allows for more rapid diffusion of oxygen into and out of the cell. Red blood cells do not have a nucleus so they...
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Answered by Joe D. • Biology tutor
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Write a balanced chemical symbol equation for a reaction between Potassium and Water, including state symbols?

2K(s) + 2H 2 O(l) = 2KOH(aq) + H 2 (g) Potassium (K) is a group 1 metal, which is a solid. Water (H 2 O) reacts with Potassium to form Potassium Hydroxide (KOH) and Hydrogen (H 2 ). Hydrogen exists naturally...
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Answered by Joe D. • Chemistry tutor
164644 Views

How can I check if my reaction equations are correct?

The basic principle about chemical reactions is that whatever goes in one end, will undoubtedly come out the other! The simplest way to make sure your reactions are correct is to count what you have on each ...
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Answered by Alexia K. • Chemistry tutor
5092 Views

How important are case studies?

Case studies will form the backbone of your Geography GCSE. It is worth creating a short summary for each case study you cover throughout the year. That way when you come to revision they are in a format tha...
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Answered by Eleanor C. • Geography tutor
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