Question

Answer these questions​

Answer 1

Answer:

B D B(not sure) A Ok just chill

Answer 2

1. B

An electric bell is a mechanical bell that functions by means of an electromagnet. When an electric current is applied, it produces a repetitive buzzing or clanging sound. When an electric current flows through the coils, the rods became magnetic and attract a piece of iron attached to a clapper.

2. D

The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage. You can make a temporary magnet by stroking a piece of iron or steel (such as a needle) along a permanent magnet.

3.B

4. A