Figure 7a shows two long parallel wires carrying currents i, and i2 in the direc

Question

Figure 7a shows two long parallel wires carrying currents i, and i2 in the directions shown. What are the magnitude and the direction of the resultant magnetic field at point P? Assume the following values: i, 15 A, i2 32 A, and d= 5.3 cm. 90° (a) Two wires carry currents in opposite directions. What is the magnetic field at P? (b) The separate fields combine vectorially to yield the resultant field B B1 45 Figure 7b shows the individual magnetic fields B, and B set up by the currents i, and i2, respectively

Explanation / Answer

B1=u0I1/2(pie)R1

U0=4*pie*10^-7

R1=0.0265m

I1=15 amp

B1=1132.07*10^-7 Tesla

to calculate B2

=u0I2/2(pie)R2

I2=32 amperes

R2=0.0265m

B2=2415.09 tesla

B resultant=B1+B2

B resultant=3547.164 tesla

(b)B=COS 45*3547.164=2508.22 tESLA

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