Which statement explains how the charges on objects determine the electric force between them?(1 point)
Responses
Objects with the same charge attract each other, and objects with opposite charges repel each other.
Objects with the same charge attract each other, and objects with opposite charges repel each other.
Objects with the same charge repel each other, and objects with opposite charges attract each other.
Objects with the same charge repel each other, and objects with opposite charges attract each other.
Objects with positive charges repel each other, and objects with negative charges attract each other.
Objects with positive charges repel each other, and objects with negative charges attract each other.
Objects with positive charges attract each other, and objects with negative charges repel each other.
Objects with the same charge repel each other, and objects with opposite charges attract each other.
Use the table of electric force between objects in two different interactions to answer the question.
Interaction Charge on Object 1 (C) Charge on Object 2 (C) Amount of Force
A +1 –2 weak
B +1 +2 strong
Which conclusion about the interactions is correct?
(1 point)
Responses
The objects in interaction A are smaller than in interaction B.
The objects in interaction A are smaller than in interaction B.
Positive charges are stronger than negative charges.
Positive charges are stronger than negative charges.
The objects in interaction A are farther apart than in interaction B.
The objects in interaction A are farther apart than in interaction B.
Repulsive forces are stronger than attractive forces.
The objects in interaction A are farther apart than in interaction B.
Why is glass a good insulator?(1 point)
Responses
The atoms in glass do not hold on tightly to their negatively charged particles.
The atoms in glass do not hold on tightly to their negatively charged particles.
The atoms in glass hold on tightly to their negatively charged particles.
The atoms in glass hold on tightly to their negatively charged particles.
The atoms in glass do not hold on tightly to their positively charged particles.
The atoms in glass do not hold on tightly to their positively charged particles.
The atoms in glass hold on tightly to their positively charged particles.
The atoms in glass do not hold on tightly to their negatively charged particles.
Which statement describes a difference between insulators and conductors?(1 point)
Responses
Insulators are made of metallic materials, while conductors are not.
Insulators are made of metallic materials, while conductors are not.
Insulators can transmit electric current, while conductors cannot.
Insulators can transmit electric current, while conductors cannot.
Insulators have high conductivity, while conductors have low conductivity.
Insulators have high conductivity, while conductors have low conductivity.
Insulators have high resistance, while conductors have low resistance.
Insulators have high resistance, while conductors have low resistance.
Circuit A has a voltage of 10 V, and circuit B has a voltage of 15 V. Which statement about the circuits is correct?(1 point)
Responses
If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.
If the current in circuit A is greater than the current in circuit B, then the resistance in circuit A is less than the resistance in circuit B.
If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the resistance in circuit A equals the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the current in circuit A equals the current in circuit B, then the resistance in circuit A equals the resistance in circuit B.
If the current in circuit A equals the current in circuit B, then the resistance in circuit A equals the resistance in circuit B.
If the resistance in circuit A is greater than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
If the resistance in circuit A is less than the resistance in circuit B, then the current in circuit A is greater than the current in circuit B.
How does adding a resistor to an electric circuit affect the current?(1 point)
Responses
The resistor decreases the current by transforming electrical energy into different types of energy.
The resistor decreases the current by transforming electrical energy into different types of energy.
The resistor decreases the current by decreasing the amount of electric charge.
The resistor decreases the current by decreasing the amount of electric charge.
The resistor increases the current by transforming light energy or heat into electrical energy.
The resistor increases the current by transforming light energy or heat into electrical energy.
The resistor increases the current by increasing the amount of electric charge.