The magnetic moment produced in a substance of 1 g is 6 × 10-7 A - m 2. If its density is 5 g cm -3, then the intensity of magnetisation in A / m will be

Question

The magnetic moment produced in a substance of 1 g is 6 × 10-7 A - m 2. If its density is 5 g cm -3, then the intensity of magnetisation in A / m will be (A) 3.0 (B) 3× 10-6 (C) 8.3 × 106 (D) 1.2 × 10-7

Tardigrade Admin · Accepted Answer

Intensity of magnetisation, I=(M/V)=(M/ text mass / text density ) Given, mass =1 g =10-3 kg and density =5 g / cm 3 =(5 × 10-3 kg /(10-2)3 m 3) =5 × 103 kg / m 3 Hence, I=(6 × 10-7 × 5 × 103/10-3) =3 A / m

Q. The magnetic moment produced in a substance of $1 g$ is $6 \times 1 0^{- 7} A - m^{2}$ . If its density is $5 g c m^{- 3}$ , then the intensity of magnetisation in $A / m$ will be

$3.0$

$3 \times 1 0^{- 6}$

$8.3 \times 1 0^{6}$

$1.2 \times 1 0^{- 7}$

Q. The magnetic moment produced in a substance of 1g is 6×10−7A−m2. If its density is 5gcm−3, then the intensity of magnetisation in A/m will be

3.0

3×10−6

8.3×106

1.2×10−7

Intensity of magnetisation, I=VM​= mass / density M​ Given, mass =1g=10−3kg and density =5g/cm3 =(10−2)3m35×10−3kg​ =5×103kg/m3 Hence, I=10−36×10−7×5×103​ =3A/m

Q. The magnetic moment produced in a substance of $1 g$ is $6 \times 1 0^{- 7} A - m^{2}$ . If its density is $5 g c m^{- 3}$ , then the intensity of magnetisation in $A / m$ will be

$3.0$

$3 \times 1 0^{- 6}$

$8.3 \times 1 0^{6}$

$1.2 \times 1 0^{- 7}$