# If q = 16 nc. a = 3.0 m. and b = 4.0 m. what is the magnitude of the electric field at point p? If Q = 16 nC, a = 3.0 m, and b = 4.0 m. what’s the magnitude regarding the electric area at point P? [24 N/C]

In BPC
tan =a/b = 3/4
=
tan-1(0.75)
= 36.87 deg
BP = sqrt(a2 + b2) = sqrt((3)2
+ (4)2) = 5 m
Eb = k Q/BP2 = (9 x 109) (16 x
10-9)/52 = 5.76 N/C
Ea = k Q/AP2 = (9 x 109) (16 x
10-9)/42 = 9 N/C
Ec = k Q/CP2 = (9 x 109) (16 x
10-9)/32 = 16 N/C
Web electric area along X-direction is offered as
Ex = Ea + Eb Cos36.87 = (9) +
(5.76) Cos36.87 = 13.6 N/C
Web electric area along X-direction is offered as
Ey = Ec + Eb Sin36.87 = (16) +
(5.76) Sin36.87 = 19.5 N/C
Web electric area is offered as
E = sqrt(Ex2 + Ey2) =
sqrt((13.6)2 + (19.5)2) = 23.8 N/C
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