An LR circuit has L = 1.0 H `R =20 Omega`. It is connected across an emf of `2.0 V` at t=0. Find `di/dt` at (a) t =100ms, (b) t =200 ms and (c ) t = 1.0 s.

Explanation

To solve the problem step by step, we will use the concepts of an LR circuit and the formulas related to current and its rate of change.

### Given Data:
- Inductance, \( L = 1.0 \, \text{H} \)
- Resistance, \( R = 20 \, \Omega \)
- EMF, \( E = 2.0 \, \text{V} \)

### Step 1: Find \( I_0 \) and \( \tau \)
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