The electric field at a location C points north, and the magnitude is 1 106 N/C.

Question

The electric field at a location C points north, and the magnitude is 1 106 N/C. Give numerical answers to the following questions:

Where relative to C should you place a single proton to produce this field?

____m [Noth, South, East, or West]

Where relative to C should you place a single electron to produce this field?

____m [North, South, East, West]

Where should you place a proton and an electron, at equal distances from C, to produce this field?

___m

Proton is:

North, South, East, or West

Electron is:

North, South, East, or West

Explanation / Answer

The first thing you have to do is to decide where the particles are going to be located. Think about the direction of the electric fields produced by the particles in each of the possible locations and see which one will produce a total electric field North. Then work out the magnitude of the field produced by each of the particles and relate this to the total field given.

Proton should be place below point C

E = kQ/r^2 = 10^6

r = 0.038 m below C ie South of C

ELectron should be place above point C

E = kQ/r^2 = 10^6

r = 0.038 m above C ie North of C

we can't place both proton and electron equidistantly to produce this field

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