In the figure- a proton moves a distance d in a uniform electric field 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 increases or decreases-E-1-1-

The correct option is B ve, increaseW = F.d Proton is moving against the direction of electric field, So W = F d cos 180^∘, W = Ve Proton is moving in elect ...

You visited us 3 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Potential Energy - External Viewpoint

In the figure...

Question

In the figure, a proton moves a distance d in a uniform electric field $\to E$ as shown in the figure. Does the electric field do positive or negative work on the proton? Does the electric potential energy of the proton increases or decrease:

-ve, increase

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

+ve, decrease

No worries! We‘ve got your back. Try BYJU‘S free classes today!

–ve, decrease

No worries! We‘ve got your back. Try BYJU‘S free classes today!

+ve, increase

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is (B) -ve, increase
Work done in the electric field is given as $W = F . d$
Proton is moving against the direction of the electric field, So $W = F d c o s 180^{\circ}, W = - V e$
Proton is moving in the electric field from low potential region to high potential region, so its potential energy increases.

Suggest Corrections

Similar questions

Q. A proton and an

α

particle having equal kinetic energy are projected in a uniform transverse electric field as shown in figure

Q. A proton is moved 15 cm on path parallel to the field lines of a uniform electric field of

2.0 \times 10^{5}

V/m
What are the possible change in potential ?consider both cases of a moving the proton .

Q. A proton is moving with a uniform velocity of

10^{6} m s^{- 1}

along the Y-axis, under the joint action of a magnetic field along Z-axis and an electric field of magnitude

2 \times 10^{4} V m^{- 1}

along the negative X-axis. If the electric field is switched off, the proton starts moving in a circle. The radius of the circle is nearly (given:

\frac{e}{m}

ratio for proton

= 10^{8} C {k g}^{- 1}

Q. A conducting loop is held above a proton carrying wire

AB

as shown in the figure. What is the direction of the induced electric field in the loop when the proton in the wire

AB

, is constantly increasing.

Q. Protons move rectilinearly in the region of space where there are uniform mutually perpendicular electric and magnetic fields E and B.The trajectory of protons lies in the plane xz as shown in the figure and forms an angle

θ

with x-axis.Find the pitch of the helical trajectory along which the protons will move after the electric field is switched off.

Join BYJU'S Learning Program

In the figure, a proton moves a distance d in a uniform electric field →E as shown in the figure. Does the electric field do positive or negative work on the proton? Does the electric potential energy of the proton increases or decrease:

In the figure, a proton moves a distance d in a uniform electric field $\to E$ as shown in the figure. Does the electric field do positive or negative work on the proton? Does the electric potential energy of the proton increases or decrease: