What is the work done in moving a charge of `-10e` across a potential difference of 20 V from higher potential to lower potential?

Explanation

To solve the problem of calculating the work done in moving a charge of `-10e` across a potential difference of 20 V from higher potential to lower potential, we can follow these steps:

### Step 1: Understand the Formula for Work Done
The work done (W) in moving a charge (Q) across a potential difference (ΔV) is given by the formula:
\[ W = Q \times \Delta V \]

### Step 2: Identify the Charge and Potential Difference
In this case, the charge \( Q \) is given as \( -10e \), where \( e \) (the elementary charge) is approximately \( 1.6 \times 10^{-19} \) coulombs. The potential difference \( \Delta V \) is given as \( 20 \, \text{V} \).
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