Three equal negative charges are placed at three of the four corners of a square. The direction of the electric field at the remaining corner of the square is
A. along the line connecting this corner with the opposite corner, and toward that corner.
B. along the line connecting this corner with the opposite corner, but away from that corner.
C. along a side of the square away from one of the charges.
D. along a side of the square toward one of the charges.
E. no direction, zero field.
Answer: A
You might also like to view...
The Earth owes its habitability primarily to
A) the chemical composition of its surface B) a combination of its size and its distance from the Sun C) its size only D) its distance from the Sun only
A conducting rod (length = 2.0 m) spins at a constant rate of 2.0 revolutions per second about an axis that is perpendicular to the rod and through its center. A uniform magnetic field (magnitude = 8.0 mT) is directed perpendicularly to the plane of rotation. What is the magnitude of the potential difference between the center of the rod and either of its ends?
a. 16 mV b. 50 mV c. 8.0 mV d. 0.10 mV e. 100 mV
1.0 micrometer equals _____________ millimeters.
a. 
b. 
c. 
d. 
The energy that stirs the circulation in Jupiter's atmosphere comes from ________.
A. the tidal force of the Galilean moons B. the planet's magnetic field C. the planet's interior D. the Sun