The magnetic field at the center of a circular turn of wire of radius r and carr
ID: 1321841 • Letter: T
Question
The magnetic field at the center of a circular turn of wire of radius r and carrying a current I is given by the equation
a. What would the magnetic field be at the center for a current of 10A?
b. What would the field be if the loop were smaller with a radius of .10m?
In the experiment how should the circuit be arranged for optimum performance?
B = u(initial)I/2r
In this experiment current is supplied in a circuit in which the current is sent from the source to the long wire of the apparatus and then returned to the source. Suppose the circuit loop were circular and had radius of .20m
Explanation / Answer
a) B = mue*I/(2*r)
= 4*pi*10^-7*10/(2*0.2)
= 3.14*10^-5 T
b) B = mue*I/(2*r)
= 4*pi*10^-7*10/(2*0.1)
= 6.28*10^-5 T
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