engineering recuitment PGCIL Trainee Supervisor Electrical Mock Test 2024 Electromagnetic Theory Magnetostatics Application of Ampere's Circuit Law
Which of the following statements regarding solenoid are correct?
(i) The wire wound with a number of turns in the form of helix is known as solenoid.
(ii) The magnetic flux density is directly proportional to the number of turns, current and absolute permeability of the solenoid.
(iii) The magnetic field outside the solenoid is zero.
1
(i) and (ii)
2
(ii) and (iii)
3
(i) and (iii)
4
(i), (ii) and (iii)