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In a region of uniform electric field as...

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 ?

A

18

B

`-18`

C

`+48`

D

`-48`

Text Solution

AI Generated Solution

To solve the problem, we will use the principle of conservation of mechanical energy, which states that the total mechanical energy (kinetic energy + potential energy) remains constant in a conservative field, such as an electric field. ### Step-by-Step Solution: 1. **Identify Given Values:** - Initial velocity at point A, \( U_A = 6.1 \times 10^6 \, \text{m/s} \) - Final velocity at point B, \( U_B = 4.5 \times 10^6 \, \text{m/s} \) - Mass of the electron, \( m = 9.1 \times 10^{-31} \, \text{kg} \) ...
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