Coulomb\'s Law enables us to find the electric field of a single point charge. Y
ID: 1660431 • Letter: C
Question
Coulomb's Law enables us to find the electric field of a single point charge. You're able to measure an electric field of 800 N/C at a distance r from the point charge. The electric field 2. a) 1600 N/C b) 800 N/O c) 400 N/C d) 200 N/O Explain. You're determining the electric field at the location x=1, y=1 due to a source charge Q located at the origin. Which diagram shows the correct orientation of F? (Assume the length of both vectors equals 1.) 3. a) Left b) Right c) You need to know if the source charge- is positive or negative Explain. 4. The following equation gives the electric field of a single point charge. kQ Explain how this equation shows that the electric field points away from a positive point charge and toward a negative point charge.Explanation / Answer
2) Electric field = kq/r^2
where r is the seperation from the point
800 = kq / r^2
when the seperation is increased to 2r
EF = kq / (2r)^2
= 1/4 * kq/r^2 = 1/4 * 800 = 200 N/C
so option d) is the correct answer
3) electric field is a vector quantity and it has the direction away from the charge for positive charge and towards the charge for negative charge . so we need to know the sign of charge for getting the direction of it
so option c) is the correct answer