Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Electrostatics question

2008 · Q165
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Electrostatics
  5. /2008 · Q165

Electrostatics question

2008 · Q165

NEETPhysicsElectrostaticsMCQ+4 / −1
A thin conducting ring of radius R is given a charge +Q. The electric field at the centre O of the ring due to the charge on the part AKB of the ring is E. The electric field at the centre due to the charge on the part ACDB of the ring is

AIPMT 2008 Physics - Electrostatics Question 46 English
  1. A
    E along KO
  2. B
    3E along OK
  3. C
    3E along KO
  4. D
    E along OK
View written solutionFree

Correct answer: D

By the symmetry of the figure, the electric fields at O due to the portions AC and BD are equal in magnitude and opposite in direction. So, they cancel each other.

AIPMT 2008 Physics - Electrostatics Question 46 English Explanation

Similarly, the field at O due to CD and AKB are equal in magnitude but opposite in direction. Therefore, the electric field at the centre due to the charge on the part ACDB is E along OK.

PreviousNext

More from Electrostatics

  • The electric potential at a point in free space due to charge Q coulomb is Q × 1011 volts. The electric field at that point is2008 · MCQ
  • Charges +q and −q are placed at points A and B respectively which are a distance 2L apart, C is the midnight between A and B. The work done in moving a charge + Q along the semicircle CRD is Includes diagram2007 · MCQ
  • A hollow cylinder has a charge q coulomb within it. If f is the electric flux in units of voltmeter associated with the curved surface B, the flux linked with the plane surface A in units of V-m will be Includes diagram2007 · MCQ
  • Three point charges +q, − 2q and + q are placed at points (x = 0, y = a, z = 0), (x = 0, y = 0, z = 0) and (x = a, y = 0, z = 0) respectively. The magnitude and direction of the electric dipole moment vector of this charge assembly are2007 · MCQ
  • A square surface of side L metres is in the plane of the paper. A uniform electric field E (volt/m), also in the plane of the paper is limited only to the lower half of the square surface (see figure). The electric flux… Includes diagram2006 · MCQ
  • An electric dipole of moment p​ is lying along a uniform electric field E. The work done in rotating the dipole by 90o is2006 · MCQ
  • As per the diagram a point charge +q is placed at the origin O. Work done in taking another point charge −Q from the point A [coordinates (0, a)] to another point B Includes diagram2005 · MCQ
  • Two charges q1 and q2 are placed 30 cm apart, as shown in the figure. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is 4πε0​q3​​… Includes diagram2005 · MCQ