Four Charged Particles (Two Having a Charge +Q and Two

question 26

Multiple Choice

Four charged particles (two having a charge +Q and two having a charge -Q) are distributed as shown below.Each charge is equidistant from the origin.In which direction is the net electric field at the point P,which is on the y axis?

• A)directly up (in the positive y direction)
• B)directly left (negative x direction)
• C)upwards,toward the left
• D)upwards,toward the right
• E)The net field is zero,so there is no direction.

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Definitions:

HI

The chemical formula for hydrogen iodide, a diatomic molecule.

KOH

Potassium Hydroxide, a strong alkali used in various chemical processes and as a cleaning agent.

NaBr

Sodium bromide, a salt with various uses including in medicines, as a sedative, and in photographic processing.