KCET · Physics · Electrostatics
The work done to move a charge on an equivalent surface is
- A Infinity
- B Less than \( 1 \)
- C Greater than \( 1 \)
- D Zero
Answer & Solution
Correct Answer
(D) Zero
Step-by-step Solution
Detailed explanation
An equipotential surface has same electric potential at all points. Therefore, work done in moving a charge on an equipotential surface is
\(W=q\left(V_{B}-V_{A}\right)\)
\(\text {But } V_{A}=V_{B}\)
\(\Rightarrow W=0\)
Therefore, work done in moving a charge on an equipotential surface is zero.
\(W=q\left(V_{B}-V_{A}\right)\)
\(\text {But } V_{A}=V_{B}\)
\(\Rightarrow W=0\)
Therefore, work done in moving a charge on an equipotential surface is zero.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The figure shows variation of \(R, X_L\) and \(X_C\) with frequency \(f\) in a series \(L-C-R\) circuit. Then, for what frequency point is the circuit capacitive?
KCET 2024 Medium - Figure shows a mixture of blue, green and red coloured rays incident normally on a right angled prism. The critical angles of the material of the prism for red, green and blue are \(46^{\circ}, 44^{\circ}\) and \(43^{\circ}\) respectively. The arrangement will separate
KCET 2008 Medium - The frequency of an alternating current is \( 50 \mathrm{~Hz} \). What is the minimum time taken by current to reach its peak value from rms value?KCET 2019 Easy
- The displacement of a particle executing SHM is given by \(x=3 \sin \left[2 \pi t+\frac{\pi}{4}\right]\), where \(x\) is in metre and \(t\) is in seconds. The amplitude and maximum speed of the particles isKCET 2022 Medium
- Diameter of the objective of a telescope is \( 200 \mathrm{~cm} \). What is the resolving power of a telescope
\( ? \) Take wavelength of light \( =5000 \mathrm{~A} \).KCET 2014 Easy - The process of super imposing message signal on high frequency carrier wave is calledKCET 2016 Easy
More PYQs from KCET
- With what velocity should an observer approach a stationary sound source, so that the apparent frequency of sound should appear double the actual frequency? ( is velocity of sound).KCET 2008 Medium
- During sewage treatment biogas produced includesKCET 2015 Hard
- Which cell of the female gametophyte is involved in the formation of primary endosperm nucleus (PEN) after fertilisation?KCET 2021 Medium
- A closed water tank has cross-sectional area \(A\). It has a small hole at a depth of \(h\) from the free surface of water. The radius of the hole is \(r\) so that \(r \ll \sqrt{\frac{A}{\pi}}\). If \(p_o\) is the pressure inside the tank above water level and \(p_a\) is the atmospheric pressure, the rate of flow of the water coming out of the hole is ( \(\rho\) is density of water)
KCET 2023 Medium - Volume occupied by single \( \mathrm{CsCl} \) ion pair in a crystal is \( 7.014 \times 10^{-23} \mathrm{~cm}^{3} \). The smallest \( \mathrm{Cs}- \)
Cs inter-nuclear distance is equal to length of the side of the cube corresponding to volume of
one \( \mathrm{CsCl} \) ion pair. The smallest \( \mathrm{Cs}-\mathrm{Cs} \) inter-nuclear distance is nearlyKCET 2014 Medium - The efficiency of a Carnot engine which operates between the two temperatures \( T_{1}=500 \mathrm{~K} \)
and \( T_{2}=300 \mathrm{~K} \) isKCET 2015 Medium