Question

List the factors on which the strength of magnetic field produced by
(a) a current-carrying straight conductor
(b) current carrying solenoid depends.

Answer 1

(1)Magnetic field due to straight conductor at a point $B=\frac{{\mu }_{o}I}{2\pi d}$

So, magnetic field depends on the current flowing and distance $\left(d\right)$ of that point.

(2)Magnetic field due to solenoid $B=\frac{\mu Ni}{l}$

So, the magnetic field depends on the current flowing, the number of turns in solenoid and length of the solenoid.