In a region of uniform electric field as an electron travels from A to B it slows from `U_(A)=6.1xx10^(6)m//s "to" U_(B)=4.5xx10^(6)` m/s . What is its potential change `Delta V= V_(B)-V_(A)` in volts ?

Options

A. 18
B. `-18`
C. `+48`
D. `-48`

Explanation

To solve the problem, we need to find the potential change \( \Delta V = V_B - V_A \) as an electron moves from point A to point B in a uniform electric field. The electron slows down from an initial speed \( U_A = 6.1 \times 10^6 \, \text{m/s} \) to a final speed \( U_B = 4.5 \times 10^6 \, \text{m/s} \).

### Step-by-Step Solution:

1. **Identify the change in kinetic energy**:
The change in kinetic energy (\( \Delta K \)) of the electron can be calculated using the formula:
\[
\Delta K = K_B - K_A
...