Example

I1 = 0.5 Amps Bleft = moI1 / 2p (.04 m)

I2 = 15 Amps = (2 x 10-7)(0.5)/(.04) T

= 2.5 x 10-6 T

Fleft 8 cm Fleft = I2 L Bleft

Fright = (15)(.08)(2.5 x 10-6) N

4 cm = 3.0 x 10-6 Nt left

7 cm Similarly, Fright

= 1.71 x 10-6 Nt. right.

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