Question

1. Copper wire is coated with plastic to protect users from getting electric shock.
2. Rheostat is used in an electric circuit only to increase the current
3. An electric bell works because the current flows through its coil
4. A coil carrying current changes soft iron into permanent magnet.
5. Nichrome is an alloy of lead and tin.
6. Electromagnets are used to produce permanent magnets.
7. A fuse of higher current rating is used for electric oven
& The magnetic strength in a conductor decreases with the increase in current
9. Armature in an electric bell is a steel bar suspended in front of an
electromagnet​

Answer 1

Answer:

1.true,because copper is bad conductor of heat and electricity

Explanation:

copper wire is safe for use and it is a kind of thermoplastic. copper wire are coated with plastic because as plastic is bad conductor of electricity and safe for use