Download Electrode Charge

Electrode Charge?
The electric field strength 4.10 cm from a very wide charged electrode is 4000 N/C.
What is the charge (in nC) on a 2.00-cm- diameter circular segment of the electrode?
Considering the electrode as a plane conducting plate (as it is very wide) the and
the surface charge density or the surface charge per unit area be , the electric
field at any point is given by
E

0
Gives  0 E  8.85 *1012 * 4000  3.54 *108 C/m2
Hence the charge on the given area will be given by
Q =  *A = (3.54*10-8 C/m2)*3.1416*(1*10-2 m)2
[diameter is 2.0 cm hence radius is 1.0 cm = 1.0/100 m]
Or
Q = (3.54*10-8 C/m2)*3.1416*(1*10-2 m)2 = 1.11*10-11 C
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+