Problem 9: Two point charges Q? > 0 and Q? < 0 of equal magnitudes and opposite signs are positi

Step 1: For Problem 9, the net electric field at point P due to the two charges Q > 0 and Q < 0

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Problem 9: Two point charges Q? > 0 and Q? < 0 of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges? A) A B) B C) C D) D E) The field is equal to zero at point P. Problem 10: A +9 nC charge and a - 9 nC charge are separated by 1.3 mm and produced an electric field of 600 N/C at a distance r (>> 1.3 mm) along the dipole, from the center of the dipole. What would be the magnitude of the electric field due to the dipole at a distance 2r from the dipole? A) One eighth B) One half C) Doubled D) One fourth E) Same Problem 11: Two protons (p? and p?) and an electron (-e) lie on a straight line, as shown. The directions of the electric force of p? on -e, the force of p? on -e, and the total force on -e, respectively, are: A. ?, ?, ? B. ?, ?, ? C. ?, ?, ? D. ?, ?, ? E. ?, ?, ?

          Problem 9: Two point charges Q? > 0 and Q? < 0 of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges?
A) A
B) B
C) C
D) D
E) The field is equal to zero at point P.

Problem 10: A +9 nC charge and a - 9 nC charge are separated by 1.3 mm and produced an electric field of 600 N/C at a distance r (>> 1.3 mm) along the dipole, from the center of the dipole. What would be the magnitude of the electric field due to the dipole at a distance 2r from the dipole?

A) One eighth B) One half C) Doubled D) One fourth E) Same

Problem 11: Two protons (p? and p?) and an electron (-e) lie on a straight line, as shown. The directions of the electric force of p? on -e, the force of p? on -e, and the total force on -e, respectively, are:

A. ?, ?, ?
B. ?, ?, ?
C. ?, ?, ?
D. ?, ?, ?
E. ?, ?, ?

Problem 9: Two point charges Q? > 0 and Q? < 0 of equal magnitudes and opposite signs are positioned as shown in the figure. Which of the arrows best represents the net electric field at point P due to these two charges?
A) A
B) B
C) C
D) D
E) The field is equal to zero at point P.

Problem 10: A +9 nC charge and a - 9 nC charge are separated by 1.3 mm and produced an electric field of 600 N/C at a distance r (>> 1.3 mm) along the dipole, from the center of the dipole. What would be the magnitude of the electric field due to the dipole at a distance 2r from the dipole?

A) One eighth B) One half C) Doubled D) One fourth E) Same

Problem 11: Two protons (p? and p?) and an electron (-e) lie on a straight line, as shown. The directions of the electric force of p? on -e, the force of p? on -e, and the total force on -e, respectively, are:

A. ?, ?, ?
B. ?, ?, ?
C. ?, ?, ?
D. ?, ?, ?
E. ?, ?, ?

Added by Christopher T.

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