ELECTROSTATICS

A negatively charged rod is brought near a metal can that rests on a wooden box. You touch the opposite side of the can momentarily with your finger. If you remove your finger before removing the rod, what will happen to the can?

• It will be discharged

• It will become positively charged.

• It will become negatively charged.

• It will remain neutral.

How does the electric field strength change as the distance from a charged object increases?

• The electric field strength increases.

• The electric field strength decreases.

• The electric field strength remains constant.

• The electric field strength fluctuates randomly.

Which of the following can be attracted by a positively charged object?

• Another positively charged object

• Any object

• A neutral object

• No other object

Which of the following BEST explains why a charged object experiences a force in an electric field?

• The electric field causes a change in the object's charge

• The electric field generates a magnetic field that interacts with the object

• The electric field exerts a force on any charged object in its vicinity

• The electric field creates a potential difference that attracts the object

What does Ohm's Law describe concerning electrical circuits?

• The relationship between voltage and current in a circuit.

• The relationship between power and resistance in a circuit.

• The relationship between charge and capacitance in a circuit.

• The relationship between frequency and wavelength in a circuit.

According to Ohm's Law, if the voltage across a resistor is increased while the resistance remains constant, what happens to the current flowing through the resistor?

• The current decreases.

• The current increases.

• The current remains the same.

• The current becomes zero.

Which of the following is an example of charging by conduction?

• Rubbing a balloon on a wool sweater to create static electricity

• Touching a charged object to a neutral object

• Charging a metal sphere by bringing a charged rod into contact with it

• Using a Van de Graaff generator to create a spark

Which of the following describes how electric charges interact with each other?

• Like charges repel, opposite charges attract

• Like charges attract, opposite charges repel

• All charges repel each other

• All charges attract each other

Which of the following is a property of an object that has been charged by induction?

• It has gained or lost electrons

• It has a net charge of zero

• It has the same charge as the object inducing the charge

• It has a higher charge than before

According to Ohm's Law, if the resistance in a circuit is doubled while the voltage remains constant, what happens to the current?

• The current doubles.

• The current halves.

• The current remains the same.

• The current becomes zero.