An electric dipole consists of two identical but opposite charges separated by a distance 2a

Sunday, 12 August 2018

4:10 PM

Machine generated alternative text: Question: An electric dipole consists of two identical but opposite charges separated by a distance '2a. An electric dipole witn charges +4.60"C and —4.60"C and separated by a distance 824 pm is placed in a constant electric field E = 6.84 x 105i NIC. Initially the dipole is alinged along the j axis as shown in the figure. use unit vector notation to answer these questions. T ne k unit vector is out of the screen towards you. 2a Figure 1 _ Two equal but opposite charges are placed a distance 2a apart in the y direction. In the x direction a constant electric field E is applied. part 1) What is the force on the +4.60gC charge at the instant shown? i + 10 part 2) What is the net torce on the dipole in this electric field? i + 10 part 3) What is the net torque on the dipole at the instant shown in the figure? j Nm

 

Machine generated alternative text: Your answer is partially correct Note: Your answers should be correct to 3 significant figures. Feedback tor Part 1) You have incorrectly entered the first component You have correctly entered the second component You have correctly entered the third component. To calculate the force on a charge in an electric field, use: The electric field lines indicate the direction a positive particle will teel a torce so in this case the torce is to the right in the direction. Marks for this submissiom 0.22/0.33. This submission attracted a penalty of 0.11 Feedback tor Part 2) You have correctly entered the first component You have correctly entered the second component You have correctly entered the third component. Marks for this submissiom 0.33/0.33. Feedback tor Part 3) You have correctly entered the first component You have correctly entered the second component You have incorrectly entered the third component The torque can be calculated using: F in this case is equal to a and points in the direction for the -eq charge and in the —j tor the —q charge. You calculated F in pan one. The torques both act in the —k direction so they add together. Marks for this submissiom 0.22/0.33. This submission attracted a penalty of 0.11

 

Machine generated alternative text: A correct answer is 3.15, which can be typed in as follows: 3.15 A correct answer is 0, which can be typed in as follows: A correct answer is 0, which can be typed in as follows: A correct answer is 0, which can be typed in as follows: A correct answer is 0, which can be typed in as follows: A correct answer is 0, which can be typed in as follows: A correct answer is 0, which can be typed in as follows: A correct answer is 0, which can be typed in as follows: A correct answer —2.59e — 9, which can be typed in as follows: -2.sge-g

 

 

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