point charges are arranged along the x axis as shown 3, 7wo point chagges are ar
ID: 1874492 • Letter: P
Question
point charges are arranged along the x axis as shown 3, 7wo point chagges are aranged along field equal to zero a) at region of A, B, and C where is the electric ti Show your analysis (b) at region of A, B, and C where is the electric potent Nore: At infinity, the electrie potential is zero. () caleulate the e fhom origin o eosnbrulate the electrie potential at the point P that is 0.5 m away cm (d) calculate the electric field (magnitude and direction) at the point middle of two charges) from origin o. P that is 0.5 m away 4. A 220- resistor is connected across an ac voltage source l, = (1 SO V) sin [2r(60 Hzrl What is the average power delivered to this circuit (i.e. resistor)? A) 51 W B) 110 w C) 280 W D) 320 W E) 550 W P-?Explanation / Answer
3. given two point charges
a. as the point charges are of same sign, the electric field can be 0 only in between them
hence
the electric field is 0 in the region B
b. potential energy cannot be 0 at any place as both the charges are of the same sign
c. PE at the middle point = kq1/0.5 + kq2/0.5 = k(-3 + 5)*10^-6/0.5 = -35600 V
d. at the middl eof the two charges
Electric field = kq1/0.5^2 - kq2/0.5^2 = k(-3 - 5)*10^-6/0.05^2 = -28736000 V/m
4. R = 220 ohm
V = 150 sin(2*pi(60t))
average power = Vm^2/2R
Vm = 150 V
hence
Pav= 51.1363636 W
option A)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.