4. Three identical point charges +Q are placed each at a distance a from the origin as shown in the figure. The net electric field E at the origin is: a) -2ki b) -2kj c) +kj d) -ki a) The force is same at all points. b) At point (A) close to positive plate. c) At point (B) midway between the two plates. d) At point (C), close to negative plate. e) At points (C) and (D). e) Zero 5. An electron is placed between two parallel infinite charged sheets, one with uniform surface charge density to and the other with -o as shown in the figure. At which point the electric force on the electron is largest? to a) 377.0 b) 565.5 c) 754.0 d) 942.5 e) 1131 a -0 a Ax TH Bx Cx 6. A thin charged ring of radius r = 0.04 m carries a uniform charge density λ = 26.55 nC/m, placed inside a cubic surface of side length L = 1.5 m. Find the net flux (in Nm²/C) through the cubic surface. xD 2

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Chapter1: Units, Trigonometry. And Vectors
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4. Three identical point charges +Q are placed each at a distance a from the origin as shown in the figure. The net
electric field E at the origin is:
a) -2k1 b) -2k-j
c) +k=j d) -ki
a) The force is same at all points.
b) At point (A) close to positive plate.
c) At point (B) midway between the two plates.
d) At point (C), close to negative plate.
e) At points (C) and (D).
e) Zero
a) 377.0
b) 565.5
c) 754.0
d) 942.5
e) 1131
a
5. An electron is placed between two parallel infinite charged sheets, one with uniform surface charge density to and
the other with -o as shown in the figure. At which point the electric force on the electron is largest?
to
-O
Ax
a
Bx
Cx
a
xD
6. A thin charged ring of radius r = 0.04 m carries a uniform charge density λ = 26.55 nC/m, placed inside a cubic
surface of side length L = 1.5 m. Find the net flux (in Nm²/C) through the cubic surface.
Transcribed Image Text:4. Three identical point charges +Q are placed each at a distance a from the origin as shown in the figure. The net electric field E at the origin is: a) -2k1 b) -2k-j c) +k=j d) -ki a) The force is same at all points. b) At point (A) close to positive plate. c) At point (B) midway between the two plates. d) At point (C), close to negative plate. e) At points (C) and (D). e) Zero a) 377.0 b) 565.5 c) 754.0 d) 942.5 e) 1131 a 5. An electron is placed between two parallel infinite charged sheets, one with uniform surface charge density to and the other with -o as shown in the figure. At which point the electric force on the electron is largest? to -O Ax a Bx Cx a xD 6. A thin charged ring of radius r = 0.04 m carries a uniform charge density λ = 26.55 nC/m, placed inside a cubic surface of side length L = 1.5 m. Find the net flux (in Nm²/C) through the cubic surface.
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