defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Physics Moving Charges and Magnetism Solenoids and Toroids
The current in the toroid of average radius r and number of turns N is I, then magnetic field intensity B inside the toroid is related to the average radius r as:
1
B ∝ r
2
B ∝ r2
3
B ∝ r-1
4
B ∝ r-2