Back to Practice
Physics-Magnetic Properties of Materials

NEET Physics Magnetic Properties of Materials MCQ Question

Type: MCQ-numerical-Medium-Class 12

A solenoid has a core of a material with relative permeability μr=400\mu_r = 400. If the number of turns per meter is 1000 and it carries a current of 2 A, what is the value of magnetisation MM in A/m?

A

8 x 10^5 A/m

B

7.98 x 10^5 A/m

C

8.02 x 10^5 A/m

D

7.9 x 10^5 A/m

Correct Answer

Option A

Detailed Explanation

Magnetisation MM is given by M=(μr−1)HM = (\mu_r - 1)H, where H=nI=2×103H = nI = 2 \times 10^3 A/m. Thus, M=399×2×103=8×105M = 399 \times 2 \times 10^3 = 8 \times 10^5 A/m.

Found an issue with this question?

Related Questions

Explore More Questions

All Physics QuestionsMagnetism and Matter Questions