Fleming’s Left Hand Rule

Product Code : SCL-M-11198

Specifications

Construction, material and dimensions are confirmed with the quotation.

How the model is used in teaching

A wire carrying a current across a magnetic field feels a force at right angles to both the field and the current, of size F = BIL when the wire is perpendicular to the field. Fleming's left-hand rule gives the direction: hold the thumb, forefinger and middle finger of the left hand mutually at right angles, point the forefinger along the field (north to south) and the middle finger along the conventional current (positive to negative); the thumb then points along the force.

1. Place the model where the whole class can see its three direction indicators.
2. Point out the field direction first, from the north pole to the south pole.
3. Add the current direction, from positive to negative, at right angles to the field.
4. Read the force direction from the thumb, then ask students to predict what happens when the current or the field is reversed.

The model works well just before a force-on-a-conductor practical or a DC motor lesson, because students can check each prediction against the real movement of the wire or coil.

Key features

• Relates magnetic field, conventional current and mechanical force in a single aid.
• Makes the three mutually perpendicular directions easy to identify and remember.
• Supports lessons on the motor effect, electromagnetism and DC motors.
• Suitable for teacher demonstrations in school and college physics.
• Reusable for many classes when handled and stored correctly.

Documentation and supply

Most Lab Exports products carry a one-year manufacturer warranty.

Lab Exports manufactures the Fleming's left hand rule model 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.

Related Magnetism products

• Fleming's Right Hand Rule (SCL-M-11199)
• Demountable Transformer (SCL-M-11210)
• Electromagnet (SCL-M-11183)
• Electric Motor Model (SCL-M-11214)
• Electromagnet "U" Shape (SCL-M-11228)
• Horseshoe Magnet (SCL-M-11245)

The full range is in the Magnetism section of the Physics Lab range.

Frequently asked questions

What does Fleming's left hand rule show?

The direction of the force on a current-carrying conductor in a magnetic field: forefinger for field, middle finger for current, thumb for force or motion.

How is the left-hand rule different from the right-hand rule?

The left-hand rule applies to motors, where a current produces motion; Fleming's right-hand rule applies to generators, where motion produces an induced current.

What is the price of the Fleming's left hand rule model?

Prices are not published on the website. Add the Fleming's left hand rule model to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code SCL-M-11198 and the quantity, to receive a quotation.

Does Lab Exports manufacture the Fleming's left hand rule model?

Yes. Lab Exports manufactures the Fleming's left hand rule model at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code SCL-M-11198.

Request a quote

Email [email protected] with the house code SCL-M-11198 and the quantity, or add the Fleming's left hand rule model to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.