See attached 7 circled questions.
Note: figure not provided for question 40, and therefore no answer has been given.© BrainMass Inc. brainmass.com October 10, 2019, 12:17 am ad1c9bdddf
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.
The solution determines the electricity and magnetism as well as the properties of light.