why can a direct current not be used in a transformer?\na constant direct current does not produce the…
why can a direct current not be used in a transformer?\na constant direct current does not produce the required change in magnetic field for induction.\na constant direct current produces excessive heat when flowing through a wire.\nonly an alternating current can carry the amount of energy that is required.
Answer
Brief Explanations:
Transformers operate based on electromagnetic induction, which requires a changing magnetic field to induce voltage in a secondary coil. Direct current (DC) is constant, so it creates a steady, unchanging magnetic field around the primary coil, which cannot induce a voltage in the secondary coil. The other options are incorrect: DC does not inherently produce excessive heat at normal operating levels compared to AC of the same current, and DC can carry large amounts of energy, just not for transformer operation.
Answer:
A constant direct current does not produce the required change in magnetic field for induction.