How Do You Calculate Induced Current in a Coil with Changing Magnetic Field?

In summary, EMF stands for electromagnetic force, a type of force created by the movement of electrically charged particles. It is closely related to electricity and can be measured in volts or joules per coulomb. High levels of EMF exposure can be harmful to humans, causing adverse health effects. To protect ourselves from EMF, we can limit our use of electronic devices and maintain a safe distance from power lines, as well as use protective barriers like shielding materials.
  • #1
phy112
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Homework Statement



The component of the external magnetic field along the central axis of a 50 turn coil of radius 4.7 cm decreases from 1.8 T to 0 T in 4.3 s.

If the resistance of the coil is 2.8 , what is the magnitude of the induced current in the coil?

Homework Equations





The Attempt at a Solution



E=50*(1.8T*pi*.047sqrd)/.43

I am confused on how you incorporate the resistance
 
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  • #2


The question asks you to find the induced current, not just the emf. How do you find current from emf?
 
  • #3
of the coil into the equation and what units are being used for the given values. Can you provide more information or clarification? Without knowing the units, it is difficult to solve this problem accurately. Additionally, the homework equations provided are not relevant to the problem at hand. It would be helpful to know the specific equations or concepts that are being covered in this assignment.
 

Related to How Do You Calculate Induced Current in a Coil with Changing Magnetic Field?

1. What is EMF?

EMF stands for electromagnetic force, which is a type of force that is created by the movement of electrically charged particles. This force is responsible for many everyday phenomena, such as electricity, magnetism, and light.

2. How is EMF related to electricity?

EMF is closely related to electricity because it is the force that causes the movement of electrically charged particles, which is what creates an electric current. It is also responsible for the production of electromagnetic waves, which are used in many forms of technology.

3. What are the units for measuring EMF?

The units for measuring EMF are volts (V) or joules per coulomb (J/C). These units represent the amount of force or energy per unit of charge that is exerted by the electromagnetic force.

4. How can EMF be harmful to humans?

High levels of EMF exposure have been linked to adverse health effects, such as headaches, fatigue, and even certain types of cancer. This is because the electromagnetic force can disrupt the natural electrical signals in our bodies, which can affect our cells and tissues.

5. How can we protect ourselves from EMF?

To reduce our exposure to EMF, we can limit our use of electronic devices, especially those that emit high levels of EMF, such as cell phones and Wi-Fi routers. It is also recommended to maintain a safe distance from power lines and to use protective barriers, such as shielding materials, to reduce EMF exposure.

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