Gdetermine the magnetic field midway between two long straight wires 2.0 cm apart in terms of the current i in one when the other carries 25 a. assume these currents are in the same direction.

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Explanation:

Given :

the distance between the two wires is  = 2 cm

                                                                  = 0.02 m

Current in one of the wire, I = 25 A

Now we know that, when the direction of the current is same that is in one direction , the magnetic field at the mid point in between the two wires will oppose each other.

Therefore we know that

=

                            =

                            =

d. platinum would have the greatest temperature increase because it has the lowest specific heat.

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