An iron rod of volume 10⁻⁴ m³ and relative permeability 1000 is placed inside a long solenoid having 5 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod is

Options

(a) 20 Am²
(b) 25 Am²
(c) 30 Am²
(d) 35 Am²

Correct Answer:

25 Am²

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.