1. A coil in which current is induced is known as_____.

2. Shape of magnetic lines if force in straight conductor are_____.

3. The value of induced emf is directly proportional to the rate of change of____.

4. Type of transformer which is used to increase the value of alternating voltage_____.

5. When current passes through straight conductor it produce magnetic field in the form of______.

6. A practical application mutual induction is_____.

7. Magnetic lines of force in solenoid are____.

8. Magnetic field in most part of the coil is_____.

9. Electromagnet is used in device_____.

10. Who found the direction of induced e.m.f first time_____.