1) A dipole with dipole moment 1.5 nC*m is oriented at 30 degreesto an electric field, 4.0*10^6 N/C. (a) What is the torque on thedipole? (b) How much work is required to rotate the dipole until itis parallel to the field (hint: think about work-energyrelationship)?
(2) Two parallel-plate capacitors with different plate separationbut the same capacitance are connected in series to a battery. Bothcapacitors are filled with air. The quantity that is NOT the samefor both capacitors when they are fully charged is (pleaseexplain):
(A) potential difference
(B) stored energy
(C) electric field between the plates
(D) charge on the positive plate
(E) dielectric constant
(3) 20 loops of wire with a radius of 7.5 cm rotates about adiameter in a uniform magnetic field of 1.6 T. To produce a maximumemf of 20.0 V, it should rotate at:
(A) 0
(B) 2.7 rad/s
(C) 5.6 rad/s
(D) 35 rad/s
(E) 71 rad/s
1) A dipole with dipole moment 1.5 nC*m is oriented at 30 degreesto an electric field, 4.0*10^6 N/C. (a) What is the torque on thedipole? (b) How much work is required to rotate the dipole until itis parallel to the field (hint: think about work-energyrelationship)?
(2) Two parallel-plate capacitors with different plate separationbut the same capacitance are connected in series to a battery. Bothcapacitors are filled with air. The quantity that is NOT the samefor both capacitors when they are fully charged is (pleaseexplain):
(A) potential difference
(B) stored energy
(C) electric field between the plates
(D) charge on the positive plate
(E) dielectric constant
(3) 20 loops of wire with a radius of 7.5 cm rotates about adiameter in a uniform magnetic field of 1.6 T. To produce a maximumemf of 20.0 V, it should rotate at:
(A) 0
(B) 2.7 rad/s
(C) 5.6 rad/s
(D) 35 rad/s
(E) 71 rad/s
