A doorbell requires a current of 0.4 A and 6 volts.  It is connected to a transformer with 2000 turns in the primary coil, which is plugged into a 120 Vac voltage source.  Find the number of turns necessary in the secondary coil, and the current in the primary coil.  Assume 100% efficiency.

Expert Answers

An illustration of the letter 'A' in a speech bubbles

The doorbell that requires a voltage of 6 V and a current of 0.4 A to operate is connected to a transformer. The primary coil of the transformer has 2000 turns and the voltage across the primary coil is 120 V. It is assumed that there is no loss in the transformer as it...

(The entire section contains 146 words.)

Unlock This Answer Now

Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.

Start your 48-Hour Free Trial
Approved by eNotes Editorial Team