# Electric field q

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#1
Hi! I was wondering if someone could help me with these questions, or maybe just a) and c)? Thanks for any help in advance
0
11 months ago
#2
(Original post by kswales1)
Hi! I was wondering if someone could help me with these questions, or maybe just a) and c)? Thanks for any help in advance
For (a), you can use
Electric force = Charge × Electric field strength
and for (d), it is just using the work done formula.
0
11 months ago
#3
To a.)

As already answered, the Electric force depends on the charge of the particle and electric field within the two plates, so Electic force = charge x Electric field strength.

The Electric field strength in turn is dependend on the voltage within the plates of the capacitor and the distance of the plates themselve:

Electric field strength = Voltage / distance

to c.)

A charge that moves up and down expends potential energy in an electric field in the direction to point B:

W = Electric field * charge * length from A to B

as Electric field strength = Voltage / distance, the formula can be written:

W = (Voltage / distance) * charge * length from A to B
Last edited by Kallisto; 11 months ago
0
#4
(Original post by Kallisto)
To a.)

As already answered, the Electric force depends on the charge of the particle and electric field within the two plates, so Electic force = charge x Electric field strength.

The Electric field strength in turn is dependend on the voltage within the plates of the capacitor and the distance of the plates themselve:

Electric field strength = Voltage / distance

to c.)

A charge that moves up and down expends potential energy in an electric field in the direction to point B:

W = Electric field * charge * length from A to B

as Electric field strength = Voltage / distance, the formula can be written:

W = (Voltage / distance) * charge * length from A to B
Ah ok, thank you so much!!
Does this mean that e) would just be work done from A->B + work done from B->C + work done from A->C?
0
11 months ago
#5
(Original post by kswales1)
Ah ok, thank you so much!!
Does this mean that e) would just be work done from A->B + work done from B->C + work done from A->C?
It is the sum of work done, yes. It is electric force F = electric field * charge and electric field and electric field E = Voltage / distance. Note: the distance of the two plates!

the distances s are given in the sketch.
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