A current of 1.0 A is established in a tightly wound solenoid of radius 2 cm having 1000 turns/metre. Find the magnetic energy stored in each metre of the solenoid.

Explanation

To find the magnetic energy stored in each meter of a tightly wound solenoid, we can follow these steps:

### Step 1: Understand the Formula for Magnetic Energy
The magnetic energy (E) stored in a solenoid can be expressed using the formula:
\[ E = \frac{B^2 \cdot V}{2 \mu_0} \]
where:
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