A coil having resistance 15 and inductance 10 H is connected across a 90 Volt supply. Determine the value of current after 2sec . What is the energy stored in the magnetic field at that instant

Explanation

To solve the problem step by step, we will first determine the current flowing through the coil after 2 seconds and then calculate the energy stored in the magnetic field at that instant.

### Step 1: Identify Given Values
- Resistance (R) = 15 Ω
- Inductance (L) = 10 H
- Voltage (E) = 90 V

### Step 2: Calculate the Peak Current (I₀)
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