State whether following statements are True or False:
(a) An electric motor converts mechanical energy into electrical energy
(b) An electric generator works on principle of electromagnetic induction
(c) The field at the center of a long circular coil carrying current will be parallel straight lines
(d) A wire with a green insulation is usually the live wire of an electric supply
State whether following statements are True or False:
(a) An electric motor converts mechanical energy into electrical energy
(b) An electric generator works on principle of electromagnetic induction
(c) The field at the center of a long circular coil carrying current will be parallel straight lines
(d) A wire with a green insulation is usually the live wire of an electric supply
(a) False
An electric motor converts electrical energy into mechanical energy. As current carrying coil is placed in a magnetic field, it experiences a force due to which it starts rotating.
(b) True
An electric generator works on the principle of electromagnetic induction. When the coil is rotated by external mechanical forces in a magnetic field, the magnetic flux through the coil changes. This creates an induced emf in the coil and hence induced current flows.
(c) True
The field at the center of a long solenoid carrying current will be parallel straight lines. This can also be verified by Right hand thumb Rule.
(d) False
Live wire has red insulation cover, whereas earth wire has green insulation colour in the domestic circuits.
(a) False
An electric motor converts electrical energy into mechanical energy. As current carrying coil is placed in a magnetic field, it experiences a force due to which it starts rotating.
(b) True
An electric generator works on the principle of electromagnetic induction. When the coil is rotated by external mechanical forces in a magnetic field, the magnetic flux through the coil changes. This creates an induced emf in the coil and hence induced current flows.
(c) True
The field at the center of a long solenoid carrying current will be parallel straight lines. This can also be verified by Right hand thumb Rule.
(d) False
Live wire has red insulation cover, whereas earth wire has green insulation colour in the domestic circuits.
