Grade 9 U1/S3 (Electric field and potential)

A small charge 6 x 10^-9 C, experiences a force of 2 x 10^-4 N in an electric field. What is the strength of the electric field?

• 3 x 10⁵ N/C

• 3 x 10^-13 N/C

Determine the strength of the electric force if a small charge 12 x 10^-8 C and experiences in an electric field 1.5 x 10^-4 N/C

• 18 x 10¹² N

• 18 x 10^-12 N

• 16 x 10¹² N

• 16 x 10^-12 N

Point Q is 0.6 dam from the electric charge Y = 3 𝜇C. Calculate the electric potential at that point Q

• 5,5 x 10^-3 volt

• 5,5 x 10³ volt

• 4,5 x 10^-3 volt

• 4,5 x 10³ volt

Point Q is 12 m from the electric charge Y = 4 𝜇C. Calculate the electric potential at that point Q

• 3 x 10^-3 volt

• 3 x 10³ volt

• 2 x 10^-3 volt

• 2 x 10³ volt

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