Question: For the finite-length current element on the z axis, as shown in Figure 7.5, use the Biot-Savart law to derive Eq. (9) of Section 7.1.

For the finite-length current element on the z axis, as shown in Figure 7.5, use the Biot-Savart law to derive Eq. (9) of Section 7.1.

Eq. (9)

(sin a2 – sina1)as 4лр н


Figure 7.5

Point 2

(sin a2 sina1)as 4 Point 2

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