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    Physics: Electricity and Magnetism; Properties of Light

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    See attached 7 circled questions.

    Note: figure not provided for question 40, and therefore no answer has been given.

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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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    Solution Summary

    The solution determines the electricity and magnetism as well as the properties of light.