Faraday's Law Apparatus
Product Code : SCL-EAE-11345
Quick answer: The Faraday's Law Apparatus is a demonstration unit for electromagnetic induction. Relative motion between a magnet and a coil changes the magnetic flux linked with the coil and induces an EMF, whose size depends on how fast the flux changes and whose direction follows Lenz's law. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Parameter | Detail |
|---|---|
| Product category | Electricity and magnetism physics apparatus |
| Capacity | 1 demonstration unit |
| Demonstrated principle | Faraday's law of electromagnetic induction |
| Related principle | Lenz's law and direction of induced EMF |
| Brand | Lab Exports |
Coil, magnet and detection-instrument details are confirmed with the quotation.
How the Faraday's law experiment is done
Faraday's law states that the EMF induced in a circuit equals the rate of change of the magnetic flux linked with it: E = -N dphi/dt, where N is the number of turns in the coil and phi the flux through each turn. Moving a magnet into or out of a coil, or moving the coil relative to the magnet, changes phi and so produces an EMF that a sensitive meter can detect.
The minus sign expresses Lenz's law: the induced current flows in the direction that opposes the change producing it. Reversing the motion therefore reverses the meter deflection, and a faster movement gives a larger deflection because the flux changes more quickly.
- Place the apparatus on a stable bench and connect the coil to the detection instrument.
- Move the magnet and coil relative to each other slowly and note the size and direction of the meter response.
- Repeat the motion quickly and compare the size of the response.
- Reverse the direction of motion and observe the reversed deflection.
- Hold the magnet still inside the coil and note that no EMF is induced.
Key features
- Shows that a changing magnetic flux induces an EMF in a conductor
- Reversing the motion reverses the induced response, illustrating Lenz's law
- Comparisons at different speeds and directions of motion
- Reinforces magnetic flux, induced current and the principle of generators and transformers
- Reusable demonstration format for repeated supervised lessons
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the Faraday's Law Apparatus at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
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The full range is in the Electrical and Electronics section of the Physics Lab range.
Frequently asked questions
What does the Faraday's law apparatus demonstrate?
That a changing magnetic flux through a coil induces an EMF, that a faster change gives a larger EMF, and that the direction of the induced current follows Lenz's law.
Why does the meter deflect the other way when the motion is reversed?
By Lenz's law the induced current always opposes the change in flux, so reversing the change reverses the direction of the induced current.
What is the price of the Faraday's Law Apparatus?
Prices are not published on the website. Add the Faraday's Law Apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code SCL-EAE-11345 and the quantity, to receive a quotation.
Does Lab Exports manufacture the Faraday's Law Apparatus?
Yes. Lab Exports manufactures the Faraday's Law Apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code SCL-EAE-11345.
Request a quote
Email [email protected] with the house code SCL-EAE-11345 and the quantity, or add the Faraday's Law Apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
