Home
Class 12
PHYSICS
The charge per unit length of the four q...

The charge per unit length of the four quadrant of the ring is `2 lambda, -2lambda, lambda` and `-lambda` respectively. The electric field at the centre is:

A

`-(lambda)/(2piepsilon_(0)R)hat(i)`

B

`-(lambda)/(2piepsilon_(0)R)hat(j)`

C

`(sqrt(2)lambda)/(4piepsilon_(0)R)hat(i)`

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - II INTENSITY OF ELECTRIC FIELD) (LEVEL - II (MAIN) MORE THAN ONE ANSWER TYPE QUESTION)|1 Videos

  • ELECTROSTATICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - II INTENSITY OF ELECTRIC FIELD) (LEVEL - II (MAIN) MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS|1 Videos

  • ELECTROSTATICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - II INTENSITY OF ELECTRIC FIELD) (LEVEL - I (MAIN) STRAIGHT OBJECTIVE TYPE QUESTION)|20 Videos

  • ELECTROMAGNETICS

    AAKASH SERIES|Exercise ADDITIONAL EXERCISE|13 Videos

  • ELEMENTS OF VECTORS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

Similar Questions

Explore conceptually related problems

The linear charge density on upper half of semi-circular section of ring is lambda and that at lower half is -lambda . The direction of electric field at centre O of ring is :

A charged wire is bent in the form of a semicircular arc of radius a. If charge per unit length is lambda coulomb/metre, the electric field at the centre O is

A long, straight wire is surrounded by a hollow metal cylinder whose axis coincides with that of the wire. The wire has a charge per unit length of lambda , and the cylinder has a net charge per unit length of 2lambda . From this information, use Gauss's law to find (i) the charge per unit length on the inner and outer surfaces of the cylinder and (ii) the electric field outside the cylinder, a distance r from the axis.

The given two fixed rings of radius R lie in XY plane as shown in the figure. Linear charge density of the rings A and B varies as per the relation lambda=lambda_(0)sintheta and lambda=lambda_(0)costheta respectively where theta is measured from +x axis. Distance between the centre of the two rings is r gt gt R

Two uniformly long charged wires with linear densities lambda and 3lambda are placed along X and Y axis respectively. Determined the slope of electric field at any point on the l ine y=sqrt3x

Two metal spheres have radii rand 2r and they emit thermal radiation with maximum intensities at wavelengths lambda and 2lambda . respectively. The respective ratio of the radiant energy emitted by them per second will be

Show that the area of the triangle with vertices (lambda, lambda-2), (lambda+3, lambda) and (lambda+2, lambda+2) is independent of lambda .

If the points A(lambda, 2lambda), B(3lambda,3lambda) and C(3,1) are collinear, then lambda=

The wavelength of the short radio waves, microwaves, ultraviolet waves are lambda_(1),lambda_(2) and lambda_(3) , respectively, Arrange them in decreasing order.

A dye absorbs a photon of wavelength lambda and re - emits the same energy into two phorons of wavelengths lambda_(1) and lambda_(2) respectively. The wavelength lambda is related with lambda_(1) and lambda_(2) as :