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m_jenny:)
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Homework Statement
A toroidal solenoid has a 60cm inner diameter and a 65cm outer diameter. The toroidal solenoid has 200 turns and carries a current of 30 Ampere. Determine the range of values for B inside the toroid.
Homework Equations
Ampere's law for toroid:
B = Uo*N*I/2*pi*r
where Uo = 4.7pi*10^-7
The Attempt at a Solution
as we are given inner diameter = 60cm and outer diameter = 65cm and since the law requires it in radius.. and as r = d/2 therefore inner radius = 30cm = 0.3m and outer radius = 32.5cm = 0.325m
and we are given N as 200 turns and Current(I) as 30 Ampere's
as we have to calculate the value inside B
subbing all given values into the Ampere's law for toroid
gives us (4PI*10^ - 7)(200)(30)/2PI(0.3) = 0.004T
I'm not sure if this is correct? can someone help me out?
thanks for the help :)
Jenny
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