TRANSFORMERS 0.0 / 5 ? PhysicsElectromagnetismGCSEEdexcel Created by: sara.5Created on: 12-04-18 12:06 What are transformers? A device that can change the voltage of an electricity supply 1 of 6 What is it mad up of? 2 coils of wire wounded into an iron core 2 of 6 What process makes the voltage in one coil induces a voltage in the second coil? Electromagnetic induction 3 of 6 What is the formula for electrical power? Electrical power=Current x Potential difference 4 of 6 When is the power in the secondary coil equal to the power of the primary coil? When the transformer is 100% efficient 5 of 6 What is the formula for 100% efficient transformer? Potential Difference Across primary coil x Current in primary Coil = Potential difference across secondary coil x Current in secondary coil 6 of 6
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