Which will a positively charged object attract?
an object that has a negative charge
an object that has a smaller positive charge
an object that has no charge
an object that has a larger positive charge
An object that has a negatively charged would be attracted to a positively charged object.
Georgia moves an unattached piece of wire back and forth over a magnet. Which best explains what will happen?
A current will be induced because the wire moves through a magnetic field.
A current will not be induced because the wire moves through a magnetic field.
A current will be induced because the wire is not part of a closed circuit.
A current will not be induced because the wire is not part of a closed circuit.
A current will be induced because the wire moves through a magnetic field.
Nina is working with electricity and shortens the wires through which the current is flowing. What is Nina most likely trying to accomplish?
convert electric energy to heat
convert electric energy to light
increase resistance
decrease resistance
Nina is most likely trying to decrease resistance.
Cora, an electrician, wraps a copper wire with a thick plastic coating. What is she most likely trying to do?
keep the electric potential of the wire balanced
decrease the wire’s resistance
increase the voltage produced by the wire
keep a current from passing out of the wire
Cora is most likely trying to keep a current from passing out of the wire by adding a thick plastic coating.
How does increasing the distance between charged objects affect the electric force between them?
The electric force increases because the distance has an indirect relationship to the force.
The electric force increases because the distance has a direct relationship to the force.
The electric force decreases because the distance has an indirect relationship to the force.
The electric force decreases because the distance has a direct relationship to the force.
The electric force decreases because the distance has an inverse relationship to the force.
What is the resistance of a clock if it has a current of 0.30 A and runs on a 9.0-V battery?
0.033
2.7
9.3
30