by BlastRoom
Practice reading electric field direction, strength, and charge signs from field lines.
#physics

30 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
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The figure hides the sign of a single point charge. Which sign must the charge have?

A single point charge is shown with its sign hidden. Which sign matches the field-line pattern?

The figure hides the signs of two side-by-side charges. What are the signs of the left and right charges?

The signs of the two charges are hidden. Which sign assignment fits the field-line pattern?

For the two hidden charges in the figure, which description is correct?

The signs are hidden on two like charges. What signs do the charges have?

The plate signs are hidden in this uniform-field diagram. Which plate is positive?

In the parallel-plate field shown, the plate signs are hidden. Which sign assignment is correct?

Which arrangement does the field-line pattern in the figure show?

Look at the two-charge field pattern. Which arrangement is shown?

Which charge arrangement matches the field-line figure?

The figure shows two charges above and below each other with signs hidden. What are their signs?

At point P in the figure, what is the direction of the electric field?

A small positive test charge is placed at P. Which way is the electric force on it?

A small negative test charge is placed at P. Which way does the electric force on it act?

A small negative test charge is placed at P near the central charge. Which way is the force on it?

Compare the electric field strength at P and Q in the figure.

At P, a positive test charge is released. Which statement matches the figure?

At the marked point between the two charges, what is the direction of the electric field?

Use the field-line figure to determine the electric field direction at P.

Point P is above the midpoint of two equal positive charges. Which way does the electric field point at P?

A positive test charge is placed at P between the parallel plates. Which way is the electric force on it?

By convention, the electric field at a point points in the direction of the force on which object?
Which statement correctly describes electric field lines near isolated point charges?
What do closer-spaced electric field lines indicate about a region?
What is the SI unit of electric field strength when E = F/q?
Why can electric field lines never cross at an ordinary point in space?
A C test charge feels a 0.50 N electric force at a point. What is the electric field strength there?
Use with . What is the field strength 0.030 m from a point charge?
Use with . What is the field strength 0.50 m from a point charge?
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Ohm's Law
40 questions