Year: 2023
Topic: Moving charges and magnetism
Time :
1.
A very long conducting wire is bent in a semi-circular shape from A to B as shown in figure. The magnetic field at point P for steady current configuration is given by
(1). \(\displaystyle\frac{µ_0i}{4R}\) pointed away from the page
(2). \(\displaystyle\frac{µ_0i}{4R}\) \(\displaystyle[1 - \frac{2}{\pi}]\) pointed away from the page
(3). \(\displaystyle\frac{µ_0i}{4R}\) \(\displaystyle[1 - \frac{2}{\pi}]\) pointed the page
(4). \(\displaystyle\frac{µ_0i}{4R}\) pointed into the page
