ELECTRIC FIELD STRENGTH

What happens to the field strength as the distance between two charged objects decreases?

• the strength stays the same

• the strength increases

• the strength decreases

• the strength fluctuates between positive and negative

If I triple the value of charge of a test charge the electric field will

• Increase by 3 
• Increase by 9
• Not change
• Decrease by 9

In the diagram below, P is a point near a negatively charged sphere. Which direction best represents the direction of the electric field at point P?

• Right
• Left
• Up 
• Down

Which quantity and unit are correctly paired?

• electric field strength and N/C
• electricity and Coulombs
• electrostatic force and electrons
• electric field strength and E

An electrostatic force of 2 X 10². newtons is exerted on a charge of 4 coulomb at point P in an electric field. The magnitude of the electric field intensity at P is

• 8 X 10² N/C
• 5 N/C
• 2 X 10^-2 N/C
• 50 N/C

Where can an electric field be found?

• below a force field

• in a gravitational field

• in the space surrounding a charged object

• outside of a magnetic field

When two objects have opposite charge (+ and -), they are:

• Attracted to each other
• Repelled by each other
• Have no effect on each other

What is an electric field?

• ratio potential difference across the parallel plates to separation of plates

• force per unit charge

• region of space where a charge experience a force.

• tangent to the curve gives direction of force on charge at the point.

An electrostatic force of 20 N is exerted on a charge of 8.0 x 10^-2 C at point P in an electric field. What is the magnitude of the electric field intensity at P?

• 1.6 N/C

• 20. N/C

• 2.5 x 10² N/C

• 4.0 x 10^-3 N/C

Opposite charges ...

• attract each other
• repel each other
• stabilize each other
• are not attracted or repelled