The charge passing through a conductor in a function of time and given as ` q = 2t ^2 - 4 t + 3 ` coulomb. Calculate (i) current though the conductor (ii) potential difference across it at ` t = 4 ` second. Given resistance of conductor is 4 ohm.

Explanation

To solve the problem step by step, we will follow these instructions:

### Step 1: Identify the charge function
The charge passing through the conductor is given by the function:
\[ q(t) = 2t^2 - 4t + 3 \, \text{Coulomb} \]

### Step 2: Calculate the current
Current \( I \) is defined as the rate of flow of charge, which can be mathematically represented as:
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