In the above question find the force required to move the rod with constant velocity `v`, and also find the power delivered by the external agent.

Explanation

To solve the problem of finding the force required to move the rod with constant velocity \( v \) and the power delivered by the external agent, we can follow these steps:

### Step 1: Understand the setup
We have a conducting rod of length \( L \) moving with a constant velocity \( v \) in a magnetic field \( B \). The motion of the rod in the magnetic field induces an electromotive force (emf) in the rod.

### Step 2: Calculate the induced emf
The induced emf (\( E \)) in the rod can be calculated using the formula:
\[
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