Question

The horizontal component of the earth's magnetic field at a certain place is 3.0 x 10 t and the direction of the field is from the geographic south to the geographic north. A very long straight conductor is carrying a steady current of 1
a. What is the force per unit length on in when it is placed on a horizontal table and the direction of the current is (a) east to west, (b) south to north sol. :​

Answer 1

Explanation:

Solution :

<br>

<br> (a) When the current is flowing from east to west, <br>

<br> Hence

<br> The direction of the force is downwards. This direction <br> may be obtained by either Fleming's left hand rule or the directional property of cross product of vectors. <br> (b) When the current is flowing from south to north, <br>

<br> Hence, there is no force per unit length on the conductor.