Section C: Give a short answer to the question given below.
32. (B) For the current carrying solenoid as shown, draw magnetic field lines and give reason to explain that out of the three points A, B and C, at which point the field strength is maximum and at which point it is minimum?
Point A is present inside the solenoid in the where the density of magnetic lines is . So, the magnetic field at point A is .
Point C also lies on the but at the left end. So, the magnetic field at point C is that at point A.
Point B lies where the density of magnetic lines is as they are sparse. So, the magnetic strength at point B is .
Hence, the order of magnetic field strength from highest to lowest is .
Point C also lies on the but at the left end. So, the magnetic field at point C is that at point A.
Point B lies where the density of magnetic lines is as they are sparse. So, the magnetic strength at point B is .
Hence, the order of magnetic field strength from highest to lowest is .