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IrinaVladis [17]
3 years ago
10

Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of the following statements are true?

Check all that apply. Check all that apply. An electric charge moving parallel to the magnetic field experiences a magnetic force. The direction of the magnetic force acting on a moving electric charge in the magnetic field is perpendicular to the direction of motion. An electric charge moving perpendicular to the magnetic field experiences a magnetic force. The magnetic force is exerted on a stationary electric charge in the uniform magnetic field. The direction of the magnetic force acting on a moving charge in the magnetic field is perpendicular to the direction of the magnetic field.
Physics
1 answer:
7nadin3 [17]3 years ago
7 0

Answer: 5) "The direction of the magnetic force acting on a moving charge in the magnetic field is perpendicular to the direction of the magnetic field"

3) "An electric charge moving perpendicular to the magnetic field experiences a magnetic force"

Explanation:

When a charge of magnitude q, moving with a velocity v is placed in a magnetic field of strength B, it experiences a force, the magnitude of this force F is given mathematically as

F =qvB sinx

Where x is the angle between the magnetic field and the velocity of the charge.

From this equation, we can see that the force is zero when magnetic field strength B is parallel to velocity (x=0) or when velocity v is zero.

Also the force F is maximum when the angle between magnetic field strength B and velocity is 90 ( that's they are perpendicular).

By the right hand rule, the force, velocity and strength of magnetic field are perpendicular to each other.

These points have made statement 3 and 5 of the questions to be correct.

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A transformer has a secondary voltage of 140 volts and a secondary current of 3.5 amps. if the primary current is 10 amps, what
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For an ideal transformer power loss is assumed to be zero

i.e. the power in primary coil due to input voltage must be equal to power in secondary coil due to output voltage

this can be written in form of equation

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the question is incomplete, full statement is-

A 24 kg child sits on a 2.0-m-long rope swing. You are going to give the child a small, brief push at regular intervals. If you want to increase the amplitude of her motion as quickly as possible, how much time should you wait between pushes?

<h3>What is Amplitude?</h3>

In physics, amplitude refers to the greatest displacement or distance that a point on a vibrating body or wave may move relative to its equilibrium location. It is equivalent to the vibration path's half-length.

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