There are two objects, one with a +2 charge and one with a -2 charge. If we increase the distance between the two objects, what happens to the strength of the electric force?
As we increase the distance between the two objects, the strength of the electric force between them decreases. This is because the electric force between two charged objects is directly proportional to the magnitude of the charges and inversely proportional to the square of the distance between them. So, as the distance between the two objects increases, the electric force between them decreases.
Look at the table below that contains designs for different electromagnets. Which design would have the strongest magnetic force? (In your answer list the current intensity and the number of turns in the wire)
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1 point
Captionless Image
To determine which design would have the strongest magnetic force, we need to consider the factors that influence the strength of an electromagnet: current intensity and the number of turns in the wire.
The design with the strongest magnetic force would be the one with the highest current intensity and the highest number of turns in the wire. Without specific values in the table, it's not possible to determine which one has the highest current intensity and number of turns.
If you provide the current intensity and number of turns for each design, I can help you determine which one would have the strongest magnetic force.
Current Intensity Number of turns in the wire
Low 30
Medium 30
High 30
Low 50
Medium 50
High 50
In this case, the design with the strongest magnetic force would be the one with the highest current intensity and the highest number of turns in the wire, which is:
High current intensity with 50 turns in the wire.
So, the design with high current intensity and 50 turns in the wire would have the strongest magnetic force.
For the magnetic field created around a current carrying wire in an electromagnet, the ___________ the current, the ________ the magnetic field.
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1 point
larger, weaker
larger, stronger
smaller, stronger
larger, stronger
The magnetic field created around a current-carrying wire in an electromagnet is directly proportional to the current flowing through the wire. So, the larger the current, the stronger the magnetic field.
An electromagnet is created by wrapping a wire conductor around a metal core and sending a current through it. If the number of turns in the conducting wire are decreased and the current is kept the same, how does that affect the magnetic strength?
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1 point
decreases the magnetic strength
increases the magnetic strength
it has no effect and the magnetic strength remains the same
If the number of turns in the conducting wire is decreased while keeping the current the same, it decreases the magnetic strength.
The strength of the magnetic field produced by an electromagnet is directly proportional to the number of turns in the wire. Therefore, decreasing the number of turns reduces the magnetic strength.
Looking at the chart below, name the letter of the interaction that would result in a repulsive medium strength electric force.
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1 point
Interaction Charge on object 1 Charge2 Distance
between objects
A + 1. + 1. 4
B +1. +2. 4
C + 1. -1. 4
D + 2. -2. 4
E + 1. -1. 1
F + 2. +2. 16
A
B
C
D
E
F
B
For a repulsive electric force between two charged objects with charges of +1 and +2 at a distance of 4 units, the letter B corresponds to this scenario.