Question 33: Magnetism and Matter

Question

A solenoid of 1200 turns is wound uniformly in a single layer on a glass tube 2 m long and 0.2 m in diameter. The magnetic intensity at the center of the solenoid when a current of 2 A flows through it is :

Accepted Answer

Number of turns per unit length $=\frac{1200}{2}=600$
So, Magnetic Intensity $H=n I$
$$
\begin{aligned}
& =600 	imes 2 ~\mathrm{Am}^{-1} \\
& =1200 ~\mathrm{Am}^{-1}
\end{aligned}
$$

Answer

$$\mathrm{1~A~m^{-1}}$$

Answer

$$\mathrm{2.4	imes10^{-3}~A~m^{-1}}$$

Answer

$$\mathrm{1.2	imes10^{3}~A~m^{-1}}$$

Answer

$$\mathrm{2.4	imes10^{3}~A~m^{-1}}$$

Magnetism and Matter

A solenoid of 1200 turns is wound uniformly in a single layer on a glass tube 2 m long and 0.2 m in diameter. The magnetic intensity at the center of the solenoid when a current of 2 A flows through it is :

Choose the correct answer: