Question

the value of the magnetic field of distance x from a long straight current carrying conductor is proportional to

Answer 1

Answer:

Explanation:

The magnetic field from a wire decreases with distance from the wire. Instead of the field being proportional to the inverse square of the distance, as is the electric field from a point charge, the magnetic field is inversely proportional to the distance from the wire.

Answer 2

Answer:

The magnetic field at a distance x is directly proportional to the current flowing through it .

Explanation:

We need , to find the magnetic field of distance x from a long straight current carrying conductor is proportional to which physical quantity  .

For this we should know the formula of magnetic field due to long straight current carrying conductor  .

So , $B=\dfrac{\mu_o\ I}{2\pi x}$

Here , I is current flowing through the conductor and x is the distance from the rod .

Now , from above equation we can see that the magnetic field at a distance x is directly proportional to the I i.e the current flowing through it .

Hence , this is the required solution .