An axle or truck is long. If the truck is moving due North at at a place where the vertical component of the earth's magnetic field is , the potential difference between the two ends of the axle is
Step 1: Given data
Step 2: Formula used
Step 3: Find the potential difference
Let the potential difference between the two ends of the truck is ,
Now, the potential difference is
Therefore, the potential difference between the two ends of the axle is