Search any question & find its solution
Question:
Answered & Verified by Expert
In the figure, a proton moves a distance \(d\) in a uniform electric field \(\vec{E}\) as shown in the figure. Does the electric field do a positive or negative work on the proton? Does the electric potential energy of the proton increase or decrease?
Here, distance increases so, potential energy increases.
Options:
Here, distance increases so, potential energy increases.
Solution:
1878 Upvotes
Verified Answer
The correct answer is:
Negative, increase
Force \(=\mathrm{eE}\)
Workdone \(=\) force \(\times\) distance
Force and distance are in opposite direction, so work is negative.
\(\mathrm{W}=-\mathrm{e} \mathrm{E} \times \mathrm{d}\)
Here, distance increases so, potential energy increases.
Workdone \(=\) force \(\times\) distance
Force and distance are in opposite direction, so work is negative.
\(\mathrm{W}=-\mathrm{e} \mathrm{E} \times \mathrm{d}\)
Here, distance increases so, potential energy increases.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.