12th pb

aaName of Student

Class

Section

• A
• B

Board Roll No

Class Roll No

Mobile number (whatsapp)

father/mother mobile number (whatsapp)

What is the angle between electric dipole moment and Electric Field , when the dipole is in stable equilibrium

• 0
• π/4
• π/2
• π

The Gaussian surface needed for calculating the electric field due to charge distribution is

• Any surface around the charge distribution
• Only spherical surface
• Any closed surface around the charge
• Only cylindrical surface

An electric dipole with electric dipole moment 4x10 -9 C m is aligned at 30 degree with the direction of uniform electric field of magnitude 5x10 4 N/C , calculate the magnitude of the torque acting on the dipole

• 10 -2 Nm
• 10 -4 Nm
• 10 -3 Nm
• 10 -5 Nm