Q1: The surface charge density on an infinite charged plane is - 2.50 10 ? 6 C /

Question

Q1: The surface charge density on an infinite charged plane is - 2.5010?6C/m2. A proton is shot straight away from the plane at 2.10 106m/s.

A) How far does the proton travel before reaching its turning point?

cm from a very long charged wire is ( 2100N/C ,toward the wire).

A) What is the charge (in nC) on a 1.0-cm-long segment of the wire?

cm 4.9cmelectrodes with surface charge densities 1.010?6C/m2. A proton traveling parallel to the electrodes at 1.7106m/s enters the center of the gap between them.

A) By what distance has the proton been deflected sideways when it reaches the far edge of the capacitor? Assume the field is uniform inside the capacitor and zero outside the capacitor.

Explanation / Answer

E = (2k?) / r,
where,
E = electric intensity,
? = linear charge density,
r = perpendicular distance from the wire and
k = 9 x 10^9 Nm^2/C
=> ?
= (Er) / (2k)
= (- 2100 * 0.051) / (2 x 9 x 10^9) C/m
= - 5.95nC / m
= - 5.95 x 10^-2 nC on a 1 cm length of wire.

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