1. The south pole of a magnet is held 2 inches from the north pole of a second magnet, and the force between them is measured. If the magnets are moved to 4 inches apart, the force will __________.

A. not change
B. be doubled
C. be halved
D. be quartered
E. none of the above


2. Many people consider __________ to be the founder of modern physics.

A. Aristotle
B. Isaac Newton
C. Michael Faraday
D. Albert Einstein
E. James Maxwell


3. The inventor of the electrical generator:

A. Aristotle
B. Isaac Newton
C. Michael Faraday
D. Albert Einstein
E. James Maxwell


4. A “package” of light that acts like a particle:

A. photon
B. proton
C. neutron
D. electron
E. monopole


5. Magnetic __________ lines indicate the direction that the magnetic force pushes at any point near the magnet.

A. force
B. field
C. power
D. circuit
E. pole


6. If all of the lights on a string go out when one bulb burns out, the lights are part of a(n) __________ circuit.

A. open
B. grounded
C. series
D. ground fault interrupt
E. parallel


7. Electrically charging an object through contact with an object that is already charged is charging by:

A. generation
B. induction
C. conduction
D. deduction
E. friction


8. Electrically charging an object without direct contact with an object that is already charged is charging by:

A. generation
B. induction
C. conduction
D. deduction
E. friction


9. Electrically charging an object through rubbing contact with an object that is not already charged is charging by:

A. generation
B. induction
C. conduction
D. deduction
E. friction


10. The force between charged objects is __________ proportional to the amount of electrical charge on each object.

A. directly
B. indirectly
C. moderately
D. inversely
E. all of the above


11. The force between charged objects is __________ proportional to the square of the distance between the objects.

A. directly
B. indirectly
C. moderately
D. inversely
E. all of the above


12. Electrically charged objects with like charges __________ each other.

A. attract
B. repel
C. do not affect
D. merge with
E. none of the above


13. Electrically charged objects with opposite charges __________ each other.

A. attract
B. repel
C. do not affect
D. merge with
E. none of the above


14. Electrical current is measured in __________.

A. meters
B. ohms
C. volts
D. Newtons
E. amperes


15. Electrical __________ is the amount of charge that flows through a fixed point in an electric circuit each second.

A. resistance
B. friction
C. current
D. power
E. voltage


16. Electric conductors like wires and stove elements heat up because of __________.

A. resistance
B. friction
C. current
D. centrifugal
E. voltage


17. Who proved that magnetism and electricity are governed by the same force?

A. Newton
B. Maxwell
C. Faraday
D. Duhem
E. none of the above


18. Electric current flows from the negative side of a battery to the positive side in what kind of circuit?

A. open
B. closed
C. conventional
D. induction
E. all of the above


19. A thick wire will have __________ resistance than a thin wire of the same material.

A. open
B. marginal
C. greater
D. less
E. none of the above


20. The thin wire in the previous question will convert electromagnetic force into which of the following?

A. voltage
B. amperes
C. current
D. all of the above
E. none of the above

Can you please answer it some questions i cannot understand

1. To determine the force between two magnets at different distances, you can use Coulomb's Law. According to Coulomb's Law, the force between two magnets is inversely proportional to the square of the distance between them. In this case, when the magnets are 2 inches apart, you can measure the force. To find the force when the magnets are moved to 4 inches apart, you need to calculate the new force using the inverse square relationship. The new force will be quartered, so the answer is D. be quartered.

2. To determine the founder of modern physics, you need to understand the contributions of various scientists. The commonly accepted answer is Isaac Newton. Newton's laws of motion and his formulation of universal gravitation laid the foundation for modern physics.

3. The inventor of the electrical generator is Michael Faraday. Faraday's work on electromagnetic induction led to the development of the first electric generator.

4. A “package” of light that acts like a particle is called a photon. This concept is fundamental in quantum physics, where light can exhibit characteristics of both particles and waves.

5. Magnetic field lines indicate the direction that the magnetic force pushes at any point near the magnet. By convention, these lines emerge from the north pole of a magnet and enter the south pole.

6. If all of the lights on a string go out when one bulb burns out, the lights are part of a series circuit. In a series circuit, the current flows through each component in the circuit sequentially, so if one component fails, the entire circuit is interrupted.

7. Electrically charging an object through contact with an object that is already charged is charging by conduction. When two objects come into contact, electrons can transfer from one object to another, resulting in object charges being equalized.

8. Electrically charging an object without direct contact with an object that is already charged is charging by induction. This can be achieved by bringing a charged object close to the neutral object, which induces a redistribution of charges in the neutral object.

9. Electrically charging an object through rubbing contact with an object that is not already charged is charging by friction. When two objects rub against each other, electrons can be transferred from one object to another, resulting in one object becoming positively charged and the other becoming negatively charged.

10. The force between charged objects is directly proportional to the amount of electrical charge on each object. According to Coulomb's Law, the force between two charged objects is directly proportional to the product of their charges.

11. The force between charged objects is inversely proportional to the square of the distance between the objects. According to Coulomb's Law, the force decreases as the distance between the charges increases.

12. Electrically charged objects with like charges repel each other. Like charges have the same sign (positive or negative), and the repulsive force between them causes them to move away from each other.

13. Electrically charged objects with opposite charges attract each other. Opposite charges have different signs (positive and negative), and the attractive force between them causes them to move towards each other.

14. Electrical current is measured in amperes. Current is the flow of electric charge and is measured as the rate at which charge passes through a point in an electric circuit.

15. Electrical current is the amount of charge that flows through a fixed point in an electric circuit each second. The unit for current is amperes. It is often described as the flow of electrons through a conductor.

16. Electric conductors like wires and stove elements heat up because of resistance. When an electric current flows through a conductor, the resistance of the conductor converts some of the electrical energy into heat energy.

17. The person who proved that magnetism and electricity are governed by the same force is Michael Faraday. Faraday's experiments on electromagnetic induction demonstrated the intimate connection between electricity and magnetism.

18. Electric current flows from the negative side of a battery to the positive side in a closed circuit. This is the convention used in conventional electric circuits.

19. A thick wire will have lower resistance than a thin wire of the same material. Resistance is inversely proportional to the cross-sectional area of a wire. A thicker wire has a larger cross-sectional area, which allows for easier flow of current and lower resistance.

20. The thin wire in the previous question will convert electromagnetic force into voltage. In an electrical circuit, a thin wire can act as a resistor, converting some of the electrical energy into heat, and also as a conductor, allowing the flow of electric current. The conversion of electromagnetic force to voltage is related to the resistance and flow of current through the wire.