A disk of radius r= 70 cm has a uniform surface charge density o= 98.9 nC. Calculate the electric field (in units of kN/C) at point P that lies along the central perpendicular axis of the disk and a distance 30 cm from the center of the disk. use k. = 9x10° N m2/C? Select one: O A. 2.20 O B. 6.77 OC.1.70 OD. 3.39 OE 7.35

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A disk of radius r= 70 cm has a uniform surface charge density o= 98.9 nC. Calculate the electric field (in units of kN/C) at point P that lies
along the central perpendicular axis of the disk and a distance 30 cm from the center of the disk. use k = 9×10° N m²//C²
Select one:
O A. 2.20
O B. 6.77
O C. 1.70
OD. 3.39
O E. 7.35
Transcribed Image Text:A disk of radius r= 70 cm has a uniform surface charge density o= 98.9 nC. Calculate the electric field (in units of kN/C) at point P that lies along the central perpendicular axis of the disk and a distance 30 cm from the center of the disk. use k = 9×10° N m²//C² Select one: O A. 2.20 O B. 6.77 O C. 1.70 OD. 3.39 O E. 7.35
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