A dipole of dipole moment `vecp` is kept along an electric field E such that `vecE and vecp` are in the same direction. Find the work done in rotating the dipole by an angle π .

Explanation

To solve the problem of finding the work done in rotating a dipole by an angle of π in an electric field, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Initial Configuration**:
- We have a dipole with a dipole moment \(\vec{p}\) placed in an electric field \(\vec{E}\).
- Initially, the dipole moment and the electric field are in the same direction. Thus, the angle \(\theta_1\) between \(\vec{p}\) and \(\vec{E}\) is \(0^\circ\).

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