Question 31 : A substance whose relative permeability is more than the permeability of free space is?
1. Diamagnetic
2. Paramagnetic
3. Ferromagnetic
4. Both paramagnetic and ferromagnetic
View Answer   Discuss with Members

Question 32 : A substance whose relative permeability is less than the permeability of free space is?
1. Diamagnetic
2. Paramagnetic
3. Ferromagnetic
4. Not a magnetic substance
View Answer   Discuss with Members

Question 33 : Which of the following expressions is correct with respect to relative permeability?
1. B = µ_rµ₀/H
2. B = µ_rµ₀H
3. B = µ_r/µ₀H
4. B = µ_rµ₀/H²
View Answer   Discuss with Members

Question 34 : What is the unit for relative permeability?
1. H-m
2. H/m
3. H²/m
4. No unit
View Answer   Discuss with Members

Question 35 : Calculate the magnetic flux density if the magnetic field strength is 3A/m.
1. 4*pi*10^-7T
2. 8*pi*10^-7T
3. 10*pi*10^-7T
4. 12*pi*10^-7T
View Answer   Discuss with Members

Question 36 : Calculate the magnetic field strength if the magnetic flux density is 4*piT.
1. 10^-7/16*pi²A/m
2. 10^-7A/m
3. 10⁷A/m
4. 10^-7A
View Answer   Discuss with Members

Question 37 : Calculate the magnetic flux density if the magnetic field strength is 2A/m.
1. 4*pi*10^-7T
2. 8*pi*10^-7T
3. 10*pi*10^-7T
4. 12*pi*10^-7T
View Answer   Discuss with Members

Question 38 : Which among the following, is a correct expression for µ₀.
1. µ₀=BH
2. µ₀=B/H
3. µ₀=H/B
4. µ₀=BH²
View Answer   Discuss with Members

Question 39 : The unit for permeability of free space is?
1. Henry
2. Henry-m
3. Henry/m
4. Henry/m²
View Answer   Discuss with Members

Question 40 : A substance whose permeability is more than the permeability of free space is?
1. Diamagnetic
2. Paramagnetic
3. Ferromagnetic
4. Both paramagnetic and ferromagnetic
View Answer   Discuss with Members