Question

At some point, not close to its ends, within a solenoid of arbitrary length, calculate the approximate magnetic field if the solenoid carries a current 11.0 A and has 220.0 turns per meter of the solenoid's length.

magnetic field: ______T

If the number of turns per meter is tripled, the magnetic field will:

-triple

-halve

-diminish to zero

Verify your answer by recalculating the magnetic field in this solenoid if the number of turns is tripled to 6.60×102 per meter?

magnetic field: _______T

What is the current required to produce a magnetic field of 0.000500 T within a similar solenoid that has 2500.0 turns distributed uniformly over the solenoid's length of 1.000 m ?

current: _____ A

Answer 1

a)

Magnetic field of a solenoid is given by:

, where n is the number of turns per meter.

b) From the formula of magnetic field, we see that magnetic field is directly proportional to the number of turns per meter

Hence when number of turns per meter is tripled, the magnetic field is also tripled.

c)