Question

a sector of a circle 8cm subtend an angle 90° at the center of d circle. If the sector folded without overlap to form the curved surface of a core, find the
1) base radius
2) height
3) volume of the cone​

Answer 1

Answer:

Inside a solenoid the magnetic field lines will be straight lines and the field will be strong. Outside the solenoid the magnetic field will be weak and the field lines will curl up to form closed loops. Hence, the magnetic field inside a solenoid will be uniform.