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Part A, What is the magnitude of the electric force on charge A in the figure? F=______N

Part B, What is the direction of the electric force on charge A in the figure?

Choose best answer.

(a) to the left

(b) to the right

(c) the force is zero

Concepts and ReasonFundamentals“Coulomb’s law says that the force between two point charges is proportional to their respective magnitudes and ininverse proportion to the distance between them.krefers to the Coulomb constant q_{1}and q_{2}respectively,rrepresents the distance between the two charges.Part A,represent the two points charges, andq_{A}, q_{B }ABrepresents the distance between the charges.Substitute

9 × 10to^{9 }N. m^{2}/ C^{2}k_{};1 m_{}toAB_{};1 nCtoq;_{A}1 nCtoqto_{A }; 1 nCq_{B}The charge at point C creates the electric force at point A.

represent the two points charges, and represents the distance between the charges.q_{A}, q_{C }Substitute

9 × 10to^{9 }N. m^{2}/ C^{2}k_{};1 m_{}toAB_{};1 nCtoq;_{A}1 nC_{}and4 nC_{}The net force that is acting on the charge at point A is

The magnitude the net electric force acting upon the charge at point A in 0 N .

Part B,_{}0 N is the net electric force that acts at charge A. Therefore, the force acting at the charge A is zero.A diagram and Coulomb’s law of electrostatics are the concepts that were used to answer the question.

First, draw the diagram showing the two point charges. Next, use Coulomb’s law for electrostatics to determine the magnitude of the two points and the direction of the charges.

“Coulomb’s law says that the force between two point charges is proportional to their respective magnitudes and ininverse proportion to the distance between them.It is mathematically defined as:

refers to the Coulomb constant [katex]q_1[/katex] and [katex]q_2[/katex] respectively. represents the distance between the two charges.

(A)Below is the diagram of the three-point charges.

The charge at point B creates the electric force at point A.

represent the two points charges, and represents the distance between the charges.

Substitute to; to; to ; to ; to

The charge at point C creates the electric force at point A.

represent the two points charges, and [katex]AC[/katex] represents the distance between the charges.

Substitute to; to; to ; and respectively for

The net force that is acting on the charge at point B is

Substitute [katex]9×10^{-9}[/katex] to [katex]F_{AB}[/katex] or [katex]9×10^{-9}N[/katex] to

(B)is the net electric force that acts at charge A.

Accordingly, A is the charge for which the force acts. Part A – Ans

The magnitude the net electric force acting upon the charge at point A in.