A dipole consists of charges +e and -e separated by 0.80nm. It is in an electric

Question

A dipole consists of charges +e and -e separated by 0.80nm. It is in an electric field 4.2*10^4N/C . Part A What is the value of the dipole moment? Express your answer using two significant figures. P = C middot m Part B What is the torque on the dipole when it is perpendicular to the field? Express your answer using two significant figures. r= N middot m Part C What Is the torque on the dipole when It is at an angle of 45 degree to the field? Express your answer using two significant figures. r= N middot m

Explanation / Answer

p = q d = 1.6E-19*0.8E-9=1.28E-28 c m

b)

torque = p E = 4.2E4*1.28E-28 = 5.38E-24

c) torque = p E sin theta = 5.38E-24*sin(45 degrees)=3.8E-24

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