Question

Two insulated wires perpendicular to each other in the same plane carry currents as shown in the figure.

1. Find the magnitude of the net magnetic field these wires produce at points Pand Qif the 10.0 A current is to the right.

2. Findthe magnitude of the net magnetic field these wires produce at points Pand Qif the 10.0 A current is to the left.

Answer 1

1)

P:

B = μ/2π (10/0.08 + 12/0.15) = 2e-7 * (10/0.08 + 12/0.15) = 41e-6 T

Q:

B = μ/2π (10/0.08 + 12/0.15) = 2e-7 * (10/0.08 + 12/0.15) = 41e-6 T

2)

P:

B = μ/2π (10/0.08 - 12/0.15) = 2e-7 * (10/0.08-12/0.15) = 9e-6 T

Q:

B = μ/2π (10/0.08 - 12/0.15) = 2e-7 * (10/0.08-12/0.15) = 9e-6 T

Answer 2

Answer 3

1) for P:
B = µ/2p (10/0.08 + 12/0.15)
= 2*10^-7 * (10/0.08 + 12/0.15)
= 41*10^-6 T
for Q:
B = µ/2p (10/0.08 + 12/0.15)
= 2e-7 * (10/0.08 + 12/0.15)
= 41*10^-6 T

2) for P:
B = µ/2p (10/0.08 - 12/0.15)
= 2*10^-7 * (10/0.08-12/0.15)
= 9*10^-6 T
for Q:
B = µ/2p (10/0.08 - 12/0.15)
= 2*10^-7 * (10/0.08-12/0.15)
= 9*10^-6 T