two long parallel current carrying wires are set 40 cm apart. Wire 1 carries a c
ID: 1491844 • Letter: T
Question
two long parallel current carrying wires are set 40 cm apart. Wire 1 carries a current of 5.0 A and wire 2 carries a current of 7.0A in the same direction as the current in wire 1.
A) find the magnetic field created by wire 2 at 28 cm from the wire
b) find the magnitude of the interaction force per unit length btwn the two wires.
c) In the region between the two wires, the direction of the magnetic field:
created by wire 1 is: 1)up 2) down 3)into the page 4) Out of the page
created by wire 2 is: 1) up 2) down 3) into the page 4) out of the page
Explanation / Answer
A) Magnetic field B = mu0*I /2*pi*d = 4*pi x 10^-7*7.0 /2*pi*0.28 = 5.0 x 10^-6 T...........Ans.
B)Magnetic force per unit length = mu0*I1*I2 /2*pi*d = 4*pi x 10^-7*7.0*5.0 /2*pi*0.40 = 1.75 x 10^-5 N/m..........Ans.
(c) The dircetion of the magnetic field created by wire 1 is 3) into the page.
The dircetion of the magnetic field created by wire 2 is 4) Out of the page
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