Physics: Electricity and Magnetism; Properties of Light
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Note: figure not provided for question 40, and therefore no answer has been given.
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Solution Summary
The solution determines the electricity and magnetism as well as the properties of light.
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Solution 30:
A transformer is based on the principle that it creates a magnetic field when a fluctuating electric current flows through a wire. Therefore, transformers do not work with direct current where the current constantly flows in the same direction.
Thus, alternating current (AC) is required with a transformer.
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