A toroid filled with a magnetic substance carries a steady current of 2.95 A. The coil contains 1430 turns, has an average radius of 3.14 cm. The magnetic field through the toroid is 0.0659686 T. Assume the flux density is constant. What is the magnetic field strength H within the core in the absence of the magnetic substance?

Magnetic field strength,

Explanation:

Given that,

Current in the toroid, i = 2.95 A

Number of turns in the toroid, N = 1430

Radius of the toroid, r = 3.14 cm

The magnetic field through the toroid is 0.0659686 T.

We need to find the magnetic field strength H within the core in the absence of the magnetic substance. The relation between magnetic field and the magnetic field strength is given by :

 .........(1)

B is external magnetic field

The magnetic field for the toroid is given by :

Equation (1) becomes :

So, the magnetic field strength H within the core in the absence of the magnetic substance is

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.