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plshlp1224
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Homework Statement
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Two point-like charges are placed as shown in the figure, r1 = 28.0 cm and r2 = 56.0 cm. Find the magnitude of the electric field at point (p) shown in the figure. Let q1 = −13.0 µC, q2 = +30.0 µC.
Homework Equations
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E1 = k*q1 / r^2
3. The Attempt at a Solution
The electrical field at the two points are the sum of the two electric fields of q1 and q2.
E = E1 + E2
The equation for E1 is:
E1 = k*q1 / r^2
Plugging in the known quantities:
E1 = 8.99x10^9 *13 x10^-6 / 0.28^2
So E1 equals
E1 = 1492068.776 N/C
The same process goes for E2:
E2 = 8.99x10^9 * 30 x10^-6 / 0.56^2
So E2 equals:
E2 = 860012.75521 N/C
Now adding up E1 and E1 we get:
E = (1492.34 + 860.96) x10^3
E = 2350701.531 N/C
I am not sure if my reasoning is correct, if anyone can help it'll be much appreciated, thank you!