A 6 V battery is connected to a 24 ohm resistor to create a circuit. The 6 V battery is then replaced with a 12 V battery. How d
oes the current change in the circuit when the 12 V battery is used instead of the 6 V battery? *
3 points
The current is reduced by one-fourth.
The current is reduced by one-half.
The current is doubled.
The current is tripled.
Which of the following actions can produce an electric current in a loop of wire? *
2 points
spinning the wire near a battery
placing a resistor at the end of the wire
heating a switch and placing it on the wire
moving a magnet up and down near the wire
A student began an investigation by wrapping several coils of insulated wire around a steel nail. As shown in the diagram, when the ends of the wire were connected to a battery, the student was able to pick up several steel paperclips with the end of the steel nail. Which of the following claims is best supported by the student’s investigation? *
2 points
Captionless Image
An electric current in the wire produces a magnetic field.
An electric current in the wire produces a potential difference.
A magnetic field can produce an electric current in the wire.
A magnetic field can produce an electric current in steel paper clips
A student made the graph below to show how the amount of electrical force between two charged particles depend son another variable. The student’s graph is missing a label for the x-axis. What should the student label the x-axis? *
2 points
Captionless Image
Volume of Particles (m^3)
Mass of One Particle (kg)
Charge of One Particle (C)
Distance between Particles (m)
3 points
The current is reduced by one-fourth.
The current is reduced by one-half.
The current is doubled.
The current is tripled.
Which of the following actions can produce an electric current in a loop of wire? *
2 points
spinning the wire near a battery
placing a resistor at the end of the wire
heating a switch and placing it on the wire
moving a magnet up and down near the wire
A student began an investigation by wrapping several coils of insulated wire around a steel nail. As shown in the diagram, when the ends of the wire were connected to a battery, the student was able to pick up several steel paperclips with the end of the steel nail. Which of the following claims is best supported by the student’s investigation? *
2 points
Captionless Image
An electric current in the wire produces a magnetic field.
An electric current in the wire produces a potential difference.
A magnetic field can produce an electric current in the wire.
A magnetic field can produce an electric current in steel paper clips
A student made the graph below to show how the amount of electrical force between two charged particles depend son another variable. The student’s graph is missing a label for the x-axis. What should the student label the x-axis? *
2 points
Captionless Image
Volume of Particles (m^3)
Mass of One Particle (kg)
Charge of One Particle (C)
Distance between Particles (m)
1 answer:
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As we know that KE and PE is same at a given position
so we will have as a function of position given as
also the PE is given as function of position as
now it is given that
KE = PE
now we will have
so the position is 0.707 times of amplitude when KE and PE will be same
Part b)
KE of SHO at x = A/3
we can use the formula
now to find the fraction of kinetic energy
now since total energy is sum of KE and PE
so fraction of PE at the same position will be