JEE PYQ: Magnetism And Matter Question 9
Question 9 - 2020 (07 Jan 2020 Shift 2)
The figure gives experimentally measured $B$ vs. $H$ variation in a ferromagnetic material. The retentivity, co-ercivity and saturation, respectively, of the material are:
(1) 1.5 T, 50 A/m and 1.0 T
(2) 1.5 T, 50 A/m and 1.0 T
(3) 150 A/m, 1.0 T and 1.5 T
(4) 1.0 T, 50 A/m and 1.5 T
Show Answer
Answer: (4) 1.0 T, 50 A/m and 1.5 T
Solution
From the B-H curve: Saturation = 1.5 T, Retentivity (B when H = 0) = 1.0 T, Coercivity (H when B = 0) = 50 A/m.
BETA
