Q. No 6: State whether
the following statements are true or false.
(a) An electric motor converts mechanical energy into electrical
energy. FALSE: An electric motor is a device which converts electrical
energy into mechanical energy.
(b) An electric generator works on the principle of
electromagnetic induction.
TRUE:
(c) The field at the centre of a long circular coil carrying
current will be parallel straight lines.
TRUE
(d) A wire with a green insulation is usually the live wire of
an electric supply.
FALSE
Ans:
(a) False
An electric motor converts electrical energy into mechanical
energy.
(b) True
A generator is an electric device that generates electricity by
rotating a coil in a magnetic field. It works on the principle of
electromagnetic induction.
(c) True
A long circular coil is a long solenoid. The magnetic field
lines inside the solenoid are parallel lines.
(d) False
Live wire has red insulation cover, whereas earth wire has green
insulation colour in the domestic circuits.
No comments:
Post a Comment