question_answer

  A hot plate of an electric iron connected to a 200 V line has two resistance coils A and B, each of resistance, which may be used separately in series or in parallel. What are the currents in three cases?

Answer:

                  Given, (i) Current in plates when used separately                         (1) (ii) Current in plates when connected in series Equivalent resistance in series Current flowing (1) (iii) Current in plates when connected in parallel Equivalent resistance in parallel Current flowing (1)