Question

Question 1 A)Which of the following statements regarding electric insulators is correct?(1 point) Responses Electric insulators are good heat conductors. Electric insulators are good heat conductors. Electric insulators have high tensile strength. Electric insulators have high tensile strength. Charges within electric insulators do not readily move. Charges within electric insulators do not readily move. Electric charges move freely in electric insulators. Electric charges move freely in electric insulators. Question 2 A)What materials generally act as a good conductors?(1 point) Responses Metals Metals Nonmetals Nonmetals Gases Gases Organics Organics Question 3 A)Which of the following determines if a material is a conductor or an insulator?(1 point) Responses proton movement proton movement number of protons number of protons electron movement electron movement number of electrons number of electrons Question 4 A)Salt water is a good conductor. When salt is dissolved in water, which of following explains why it becomes a good conductor?(1 point) Responses The salt dissolving breaks down the insulating molecules of the water The salt dissolving breaks down the insulating molecules of the water The salt dissolving generates a large amount of heat which is used to carry current The salt dissolving generates a large amount of heat which is used to carry current The salt dissolving frees the electrons in the solution, allowing them to move freely The salt dissolving frees the electrons in the solution, allowing them to move freely The salt dissolving require physical mixing to move the charges The salt dissolving require physical mixing to move the charges Question 5 A) A car radio with a resistance of 15 ohms draws a current of 0.87 amperes. What is the voltage of the car battery? (1 point) Responses 1.3 volts 1.3 volts 5.8 volts 5.8 volts 13 volts 13 volts 17 volts 17 volts Question 6 A) The relationship between voltage (V), current (I), and resistance (R) is shown in the equation. V=IR What happens to the current flowing through a circuit as resistance increases? (1 point) Responses It increases. It increases. It decreases. It decreases. It stays the same. It stays the same. It reverses direction. It reverses direction. Question 7 A) Avery is experimenting with a simple circuit. She measures the current in the circuit three different times with a different battery each time. First, she uses a 1.5-volt battery. Next, she uses a 3-volt battery. Last, she uses a 9-volt battery. The resistance stays the same during each test. How does the current change for each test? (1 point) Responses The current remains the same. The current remains the same. The current stops. The current stops. The current increases. The current increases. The current decreases. The current decreases. Question 8 A)What is another name for an object that uses up the electrical energy in a circuit?(1 point) Responses Source Source Battery Battery Wire Wire Load Load Question 9 A) Three light bulbs are connected in a series, as shown in the diagram. After the circuit is completed, the middle light bulb breaks. What will happen to the remaining light bulbs? (1 point) Responses Both of the remaining light bulbs will go out. Both of the remaining light bulbs will go out. Both of the remaining light bulbs will stay lit. Both of the remaining light bulbs will stay lit. Only the light bulb closest to the positive end of the battery will stay lit. Only the light bulb closest to the positive end of the battery will stay lit. Only the light bulb closest to the positive end of the battery will go out. Only the light bulb closest to the positive end of the battery will go out. Question 10 A)For a class project, Jerome builds a simple circuit with a battery and three light bulbs. On his way to school, Jerome drops his project and breaks one of the light bulbs. He has no time to fix or replace the bulb, so he removes the broken bulb and turns in his project. What will happen when Jerome runs current through his circuit?(1 point) Responses If Jerome built a series circuit, both remaining bulbs will still light up. If Jerome built a series circuit, both remaining bulbs will still light up. If Jerome built a parallel circuit, both remaining bulbs will still light up. If Jerome built a parallel circuit, both remaining bulbs will still light up. If Jerome built a series circuit, only the remaining bulb closest to the battery will light up. If Jerome built a series circuit, only the remaining bulb closest to the battery will light up. If Jerome built a parallel circuit, only the remaining bulb closest to the battery will light up. If Jerome built a parallel circuit, only the remaining bulb closest to the battery will light up. Question 11 A)Which is NOT an advantage of a series circuit?(1 point) Responses They are simple and are less likely to overheat. They are simple and are less likely to overheat. They do not require a complicated pattern of wires to create. They do not require a complicated pattern of wires to create. They are able to have additional power sources easily added to them. They are able to have additional power sources easily added to them. They are circuits so that if one section of the circuit fails, the whole circuit fails. They are circuits so that if one section of the circuit fails, the whole circuit fails. Question 12 A) The drawing shows a student holding two negatively charged balloons. What is most likely to occur if the student brings the balloons closer to each other? (1 point) Responses The magnitude of the electrostatic force between the balloons will decrease, and they will attract each other. The magnitude of the electrostatic force between the balloons will decrease, and they will attract each other. The magnitude of the electrostatic force between the balloons will increase, and they will attract each other. The magnitude of the electrostatic force between the balloons will increase, and they will attract each other. The magnitude of the electrostatic force between the balloons will decrease, and they will repel each other. The magnitude of the electrostatic force between the balloons will decrease, and they will repel each other. The magnitude of the electrostatic force between the balloons will increase, and they will repel each other. The magnitude of the electrostatic force between the balloons will increase, and they will repel each other. Question 13 A)An electric flashlight can be charged by turning a crank. Identify the types and order of energy changes happening.(1 point) Responses Electric --> Light --> Heat Electric --> Light --> Heat Mechanical --> Electric --> Light Mechanical --> Electric --> Light Mechanical --> Heat --> Electric Mechanical --> Heat --> Electric Electric --> Heat --> Mechanical Electric --> Heat --> Mechanical Question 14 A)How does increasing the distance between charged objects affect the electric force between them?(1 point) Responses The electric force increases because the distance has an indirect relationship to the force. 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 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 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 a direct relationship to the force. Question 15 A)Sam, an electrician, wraps a copper wire with a thick plastic coating. What is he most likely trying to do?(1 point) Responses keep the electric potential of the wire balanced keep the electric potential of the wire balanced decrease the wire’s resistance decrease the wire’s resistance increase the voltage produced by the wire increase the voltage produced by the wire keep a current from passing out of the wire keep a current from passing out of the wire

Answer 1

Here are the correct responses to your questions:

**Question 1:**
A) Charges within electric insulators do not readily move.

**Question 2:**
A) Metals

**Question 3:**
A) Electron movement

**Question 4:**
A) The salt dissolving frees the electrons in the solution, allowing them to move freely.

**Question 5:**
A) 13 volts
(Using Ohm's Law: V = IR → V = 15 ohms * 0.87 A = 13.05 volts)

**Question 6:**
A) It decreases.

**Question 7:**
A) The current increases.

**Question 8:**
A) Load

**Question 9:**
A) Both of the remaining light bulbs will go out.

**Question 10:**
A) If Jerome built a parallel circuit, both remaining bulbs will still light up.

**Question 11:**
A) They are circuits so that if one section of the circuit fails, the whole circuit fails.

**Question 12:**
A) The magnitude of the electrostatic force between the balloons will increase, and they will repel each other.

**Question 13:**
A) Mechanical --> Electric --> Light

**Question 14:**
A) The electric force decreases because the distance has a direct relationship to the force.

**Question 15:**
A) Keep a current from passing out of the wire.

Let me know if you need further clarification or additional questions!