q18 Two long straight current-carrying wires are lined up parallel to one another in vacuum at a distance d. Currents of I and I2 flow through thewires, both in the same direction generating the field of BM at a midpoint between them. Write down an expression for BM in terms of the1. Please useII * I!currents running in each of the wires. Assume vacuum permeability Hofor products (e.g. B*A), "/" for ratios (e.g. B/A) and theusual "+" and "-" signs as appropriate. ForA*B1use 1/(A*B). For Greek letters such as 1 or T use lambda and pi. Please use the "Displayresponse" button to check you entered the answer you expect.Вм-Display response

The current in parallel wires is I1 and I2. (in the same direction) Distance between wires = d

Two long straight current-carrying wires are lined up parallel to one another in vacuum at a distance d. Currents of Ij and I2 flow through the wires, both in the same direction generating the field of BM at a midpoint between them. Write down an expression for BM in terms of the currents running in each of the wires. Assume vacuum permeability µo = 1. Please use "*" for products (e.g. B*A), "/" for ratios (e.g. B/A) and the usual "+" and "-" signs as appropriate. For use 1/(A*B). For Greek letters such as 1 or a use lambda and pi. Please use the "Display response" button to check you entered the answer you expect. BM=

Two long straight current-carrying wires are lined up parallel to one another in vacuum at a distance d. Currents of Ij and I2 flow through the wires, both in the same direction generating the field of BM at a midpoint between them. Write down an expression for BM in terms of the currents running in each of the wires. Assume vacuum permeability µo = 1. Please use "" for products (e.g. BA), "/" for ratios (e.g. B/A) and the usual "+" and "-" signs as appropriate. For use 1/(A*B). For Greek letters such as 1 or a use lambda and pi. Please use the "Display response" button to check you entered the answer you expect. BM=