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Under what condition will the magnitude of the torque acting on an electric dipole in a uniform electric field be equal to its potential energy
An electromagnetic wave travels along positive x-axis. Which of the following pairs of space and time varying fields would generate such a wave?
q1=+10 nC and q2=-5 nC are separated by 0.10 m dinstance. If a third charge q3=2 nC is placed along with the first two charges, where should it be so that the net electric force of q1 and q2 on q3 is zero (0)?
q1=+10 nC and q2=-5 nC are separated by 0.10 m dinstance. If a third charge q3=2 nC is placed along with the first two charges, where should it be so that the net electric force of q1 and q2 on q3 is zero (0)?
What will be the radius of curvature of the path of a 3.0 KeV proton in a
perpendicular magnetic field of magnitude 0.8 T ?
A charged particle ( mass = 4.0 µg, charge = 5.0 µC ) moves in a region where the only force on it is magnetic. What is the magnitude of the acceleration of the particle at a point where the speed of the particle is 5.0 km/s, the magnitude of the magnetic field is 8.0 mT, and the angle between the direction of the magnetic field and the velocity of the particle is 60°?
What happens to the force between two charged metal spheres in a vacuum if the charge on each is doubled and the distance between them in multiplied by three?
Suppose the Earth (mass 6.0 x 10 kg) has an excess of
positive charge and the Moon (mass 7.3x 1022 kg) has an equal
excess of positive charge. Calculate the size of the charge
required so that the electrostatic force between them
balances the gravitational force between them.
An electron moves in uniform magnetic field with a speed of 5·106 m/s along the x axis. The magnetic field strength is 0.050 T, directed at an angle of 45° to the x axis and lying in the xy plane. Calculate the magnetic force 𝐹 on and acceleration 𝑎 of the electron.
Determine the direction and magnitude of the electric field at point P. The charges are
separated by a distance 2𝑎, and point P is a distance 𝑥 from the midpoint between the two
charges. Express your answer in terms of 𝑄, 𝑥, 𝑎, and 𝑘.
