How does a flashlight illustrate the Law of Conservation of Energy? (1 point)
O Potential energy in the battery will be converted to kinetic energy.
Potential chemical energy in the battery is converted to electrical energy, which is converted to light energy and heat energy.
All of the electrical energy leaving the battery will travel through the circuit and return to the battery.
O It is an electric circuit through which electrical energy flows.
Potential chemical energy in the battery is converted to electrical energy, which is then converted into light energy and thermal energy. This conversion of energy illustrates the Law of Conservation of Energy, which states that energy cannot be created or destroyed, only transformed from one form to another. In the case of a flashlight, the chemical energy in the battery is transformed into various forms of energy, but the total amount of energy remains constant.
Which is an example of a load in an electric circuit?(1 point)
Responses
9-volt battery
9-volt battery
on-off lever
on-off lever
speaker
speaker
wiring
Speaker is an example of a load in an electric circuit.
Which of the following best describes an electric circuit that powers a load?(1 point)
Responses
Electric current flows from an energy source through a conductor and back to the energy source.
Electric current flows from an energy source through a conductor and back to the energy source.
Electric current flows from an energy source directly to the load.
Electric current flows from an energy source directly to the load.
Electric current flows from an energy source through a conductor to a load and back to the energy source.
Electric current flows from an energy source through a conductor to a load and back to the energy source.
Electric current is generated in a conductor and flows through wires to a load.
Electric current flows from an energy source through a conductor to a load and back to the energy source.
Hal makes an electromagnet with a 9-volt battery, wire, and a steel rod. What is the function of electric current in his electromagnet? (1 point)
Responses
Electric current determines the strength of the magnet.
Electric current determines the strength of the magnet.
Electric current attracts or repels charged objects.
Electric current attracts or repels charged objects.
Electric current powers the electromagnet.
Electric current powers the electromagnet.
Electric current creates a magnetic field that charges the rod.
Electric current creates a magnetic field that charges the rod in Hal's electromagnet.
What is the function of the core of an electromagnet?(1 point)
Responses
The core provides the magnet with electric energy.
The core provides the magnet with electric energy.
The core provides the conductor through which electric current flows.
The core provides the conductor through which electric current flows.
The core is the part that becomes magnetized.
The core is the part that becomes magnetized.
The core is the flow of electrons that charges the magnet.