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Electric Fields Quiz

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Questions and Answers

What is the formula to calculate the electric field intensity?

E = (Q / k * r^2)

E = (r^2 / k) * Q

E = (k * r^2) / Q

E = k * (Q / r^2) (correct)

In which direction does an electric field point around a positive point charge?

Perpendicular to the charge

Toward the charge

Away from the charge (correct)

Parallel to the charge

What happens to the electric field between two parallel plates when the distance between the plates increases?

The electric field strengthens

The electric field remains unchanged

The electric field weakens (correct)

The electric field becomes zero

What is the SI unit of electric field strength?

Newton per Coulomb Signup and view all the answers

What happens to the electric field strength when the distance from a point charge is doubled?

It becomes one-fourth Signup and view all the answers

In which direction does the electric field point around a negative point charge?

Away from the charge Signup and view all the answers

Study Notes

Electric Field Intensity

The formula to calculate the electric field intensity is not provided, but it is commonly denoted as E and measured in units of Newtons per Coulomb (N/C).

Electric Field Direction

Around a positive point charge, the electric field points radially outward from the charge.
Around a negative point charge, the electric field points radially inward towards the charge.

Electric Field Between Parallel Plates

When the distance between two parallel plates increases, the electric field between the plates decreases.

Electric Field Strength

The SI unit of electric field strength is Newtons per Coulomb (N/C).
When the distance from a point charge is doubled, the electric field strength decreases by a factor of four (1/4).

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Description

Test your knowledge of electric fields with this quiz. Explore the formula for calculating electric field intensity, the direction of an electric field around a positive point charge, and the effects of increasing distance between parallel plates on the electric field.