United Scientific Deluxe Current Balance
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Items Shipped Within the Contiguous 48 United States
Free Shipping Eligible Items
- Free shipping and handling on eligible supply orders of $49 or more. Free shipping calculation is based on the subtotals of eligible items, after any additional discounts are applied.
- For subtotals less than $49, the shipping and handling charge is $9.95.
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- Shipping and handling charges are 15% of the subtotal of the items, after any discounts are applied, with a $9.95 minimum charge.
Free Shipping Ineligible Items
- Shipping and handling charges are 15% of the subtotal of the items, after any discounts are applied, with a $99 minimum charge. If the subtotal is greater than $1,000, please e-mail freight_quote@schoolspecialty.com for a freight quote.
*Note: Individually negotiated shipping policies will override the standard shipping policy. See Full Details
Items Shipped to Hawaii, Alaska and International
See our Hawaii & Alaska Shipping Policy and International Shipping Policy for details.This kit includes an air core solenoid and a current balance for demonstrating and measuring the small force experienced by a conductor carrying an electric current in a magnetic field. To run the experiment, one half of the current balance is placed inside the solenoid. The other half has an adjustable counterweight and can carry light additional masses. When current is supplied to the balance and solenoid from an external power supply, the balance deflects. Adding light masses until balance is restored allows the force on the conductor to be measured.
Air core solenoid includes a clear acrylic former and large diameter to easily fit the current balance. Five tappings give easy access to windings of 100, 200, 300, 400 and 500 turns by simply moving one plug between the five red binding posts. The coil has a total resistance of 20 omega, or 4 omega per 100 windings and can carry up to 1-1/2A of current in a single 100-turn segment, allowing a 6VDC power source to be used (and up to 12 volts for the full 500 turns). Includes activity guide.
- Current Balance
- Counter Weights (5)
- Base
- Clips (2)
- Solenoid
- Activity Guide