P118 2017W -Ch 23 Elecn Dipole in an Electric Field Q23.13 Consider the three di

Question

P118 2017W -Ch 23 Elecn Dipole in an Electric Field Q23.13 Consider the three dipoles in a uniform electric field )Which dipole experiences no net force in the electric field? b) Which dipole experiences no net torque in the electric field? Explain your answers. Refer to the direction of the electric field and the force on each charge en Q23.14 Suppose a dipole is in the elec tric field of a positive point charge as shown. What will happen? A. Nothing. B. The dipole will rotate counter-clockwise. C. The dipole will rotate clockwise. D. The dipole will rotate counter-clockwise and will be attracted. E. The dipole will rotate clockwise and will be attracted. Explain your answer. Refer to the direction and magnitude of the electric field and the force on each charge

Explanation / Answer

There is no net force on dipole a because the upward force on positive end is balanced by the downward force on negative end.

There is no net torque on dipole c because the force on positive and negative end is along the same line. Since torque = force x distance and distance =0 thus torque is zero

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