Home
Class 12
PHYSICS
An electric dipole with dipole moment 4...

An electric dipole with dipole moment `4xx 10^(-9) ` C-m is aligned at ` 30^(@) ` with the direction of a uniform electric field of magnitude ` 5xx 10^(4) NC^(-1) `.Calculate the magnitude of the torque acting on the dipole.

Text Solution

Verified by Experts

Here `p=4 xx10 ^(-9) C-m ,theta =30^(@) and E=5xx 10^(4) NC^(-1) `
` therefore ` Magnitude of torque ` tau =pE sin theta =4xx 10^(-9) xx 5xx 10^(4) xx sin 30^(@) = 4xx 10^(-9) xx 5xx 10^(4) xx 0.5 =10^(-4) N-m `
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC CHARGES AND FIELDS

    U-LIKE SERIES|Exercise ADDITIONAL EXERCISES|10 Videos

  • ELECTRIC CHARGES AND FIELDS

    U-LIKE SERIES|Exercise CASE BASED/ SOURCE -BASED INTEGRATED QUESTIONS|14 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST SECTION-C (VERY SHORT ANSWER QUESTIONS)|3 Videos

  • ELECTROMAGNETIC WAVES

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST (SECTION C)|1 Videos

Similar Questions

Explore conceptually related problems

An electrtic dipole with dipole moment 4xx10^(-9) C m is aligned at 30^(@) with the direction of a uniform electric field of magnitude 5xx10^(4) NC^(-1) . Calculate the magnitude of the torque acting on the dipole .

An uniform electric field of magnitude 5 xx 10^(4) NC^(-1) has a dipole of dipole moment 4xx 10^(-9) cm aligned at 30^(@) with the direction of field. Calculate the magnitude of torque acting on the dipole:

An electric dipole of length 10cm having charges +- 6xx10^(-3) C , placed at 30^(@) with respect to a uniform electric field experiences a torque of magnitude 6 sqrt(3) N-m . Calculate (i) magnitude of electric field (ii) the potential energy of dipole.

A magnetised needle of magnetic moment 4*8xx10^-2JT^-1 is placed at 30^@ with the direction of uniform magnetic field of magnitude 3xx10^-2T . What is the torque acting on the needle?

An electric dipole in a uniform electric field has potential energy U. The magnitude of the torque acting on the dipole due to the field is tau .

An electric dipole experiences a torque of 10sqrt3 Nm, when placed at an angle of 60^@ with a uniform electric field of magnitude 10^3 NC^(-1) Calculate the charge on the dipole if its length is 3 cm.

An electric dipole of dipole moment 4xx10^(-5) Cm is placed in a uniform electric field of 10^(-3) N//C making an angle of 30^(@) with the direction of the field. Determine the torque exerted by the electric field on the dipole.

An electric dipole of moment 5xx10^(-8) C-m is aligned in a uniform electric field of 1*44xx10^(4) N//C . Calculate potenitial energy of the diople at 60^(@) with the direction of electric field.

An electric dipole of dipole moment p = 5 xx 10^(-18)C - m lying along unifrom electric field E = 4 xx 10^(4) NC^(-1) . Calculate the work done is rotating the dipole by 60^(@) .