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Magnetism and magnetic fields answer explanations

Review worked answers and explanations for Magnetism and magnetic fields. Aligned to OCR Gcse Physics A Gateway.

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Unofficial practice material Higher: A step-down transformer is used to convert 230 V AC mains voltage to 12 V AC for a low-voltage lighting system. The primary coil has 1150 turns. a) Calculate the number of turns required in the secondary coil. (2 marks) b) State two ways in which energy can be lost in a real transformer and suggest one method to minimise each loss. (4 marks) [6 marks]

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