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

question 33

Multiple Choice

Four tiny charged particles (two having a charge +Q and two having a charge -Q) are distributed on the x- and y-axes as shown in the figure.Each charge is equidistant from the origin.In which direction is the net $\vec { E }$ field at the point P on the y-axis?

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

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Definitions:

Compounded Continuously

A method of calculating interest where the interest amount is constantly added to the principal, leading to exponential growth.

Annual Interest Rate

The percentage of a sum of money charged for its use per year.

Compounded Continuously

A way of calculating interest where the frequency of compounding is so high that it is effectively continuous, leading to exponential growth.

Exponential Equation

An equation in which a variable appears in the exponent, showing the rate of growth or decay.