Electromotive force (EMF) of a circular loop wire

In summary, a circular loop of wire with a radius of 12.0 cm is placed in a magnetic field that is decreasing at a constant rate of 0.050 T per second. The emf induced in the loop during this time interval can be calculated using the equation: required magnitude of emf in mV = 1000*pi*(0.12^2)*0.05. The answer in volts would be 0.00226 V. It is important to note that cheating is not allowed on the platform and threads will be closed for moderation if this behavior is observed.
  • #1
Toughnuke
1
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Hi, so, I got help from this homework problem by posting it on chegg, but I want clarification.

A circular loop of wire of radius 12.0 cm is placed in a magnetic field directed perpendicular to the plane of the loop and into the page. The field is decreasing at a constant rate of 0.050 T per second. What is the magnitude (in volts) of the emf induced in the loop during this time interval? Experts only please and also please show all work and drawings and be clear!
media%2Faeb%2Faeb8ba44-63f3-44fc-b4ec-4be8734a5e42%2FphpNU2y02.png
Is this right, and how did he get 1000?Required magnitude of emf in mV = 1000*pi*(0.12^2)*0.05 = 2.26 mV
 
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  • #2
1000 is multiplied to give answer in mV the answer in volts would be 0.00226 V.
 
  • #3
Thread closed temporarily for Moderation...
 
  • #4
Cheating is not allowed at the PF. You pay for the answer to your schoolwork problem at chegg.com, and then come to the PF to check the answer and ask for the steps in the solution. Thread will stay closed. Do not post like this again here.
 

1. What is the definition of electromotive force (EMF)?

Electromotive force, also known as voltage, is the potential difference between two points in a circuit that causes current to flow.

2. How is the EMF of a circular loop wire calculated?

The EMF of a circular loop wire is calculated by multiplying the rate of change of magnetic flux through the loop by the number of turns in the loop.

3. What factors affect the EMF of a circular loop wire?

The EMF of a circular loop wire is affected by the strength of the magnetic field, the number of turns in the loop, and the rate of change of the magnetic field.

4. How does the direction of the magnetic field affect the EMF of a circular loop wire?

The direction of the magnetic field affects the EMF of a circular loop wire by determining the direction of the current flow in the wire. If the magnetic field is changing in a clockwise direction, the current flow will be in the opposite direction.

5. What is the unit of measurement for EMF?

The unit of measurement for EMF is volts (V), which is the same as joules per coulomb.

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