Question 166: Magnetism and Matter

Question

A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an electric current of 5A. The magnetic flux density produced by the solenoid is : (permeability of free space = 4$$\pi$$ $$	imes$$ 10$$-$$7 H/m)

Accepted Answer

B = $$\mu$$ n i
B = $$\mu$$
r
$$\mu$$
0
n i
B = 500 $$	imes$$ 4$$\pi$$ $$	imes$$ 10
$$-$$7
$$	imes$$ 10
3
$$	imes$$ 5
B = $$\pi$$ $$	imes$$ 10
$$-$$3
$$	imes$$ 10
3
B = $$\pi$$ T

Answer

$$\pi$$T

Answer

2 $$	imes$$ 10$$-$$3$$\pi$$ T

Answer

10$$-$$4$$\pi$$ T

Answer

$${\pi  \over 5}$$ T

Magnetism and Matter

A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated windings of the solenoid carry an electric current of 5A. The magnetic flux density produced by the solenoid is : (permeability of free space = 4$\pi \times 10-$7 H/m)

Choose the correct answer: