Question 64: Magnetism and Matter

Question

An element $\Delta l=\Delta x\hat{i}$ is placed at the origin and carries a large current $I=10 \mathrm{~A}$. The magnetic field on the $y$-axis at a distance of $0.5 \mathrm{~m}$ from the elements $\Delta x$ of $1 \mathrm{~cm}$ length is:

Accepted Answer

$\begin{aligned}
& B=\frac{u_0}{4 \pi} \frac{i d l \sin 	heta}{r^2} \
& \Rightarrow B=\frac{10^{-7} 	imes 10 	imes 10 \quad 	imes 1}{\frac{1}{4}}=4 	imes 10^{-8} \mathrm{~T}
\end{aligned}$

Answer

$10 	imes 10^{-8} \mathrm{~T}$

Answer

$8 	imes 10^{-8} \mathrm{~T}$

Answer

$4 	imes 10^{-8} \mathrm{~T}$

Answer

$12 	imes 10^{-8} \mathrm{~T}$

Magnetism and Matter

An element \Delta l=\Delta x\hat{i} is placed at the origin and carries a large current I=10 \mathrm{~A}. The magnetic field on the y-axis at a distance of 0.5 \mathrm{~m} from the elements \Delta x of 1 \mathrm{~cm} length is:

Choose the correct answer: