Wednesday
March 29, 2017

Post a New Question

Posted by on .

Using the circuit for an electric bell,
a) Explain why the bell won't work if the elctromagnet is replaced with a permanent magnet. (2 marks)
b)Explain why the core of the electromagnet used in an electric bell must not be made from steel. (3 marks)

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question