Friday, 27 June 2014 15:55

## K6-32: POTENTIOMETER

• ID Code: K6-32
• Purpose: Find an unknown EMF using a voltage divider.
• Description: A battery of voltage V is connected across a resistive wire of length L. A second, "unknown" lesser voltage battery is connected through a meter to the slide tap of the potentiometer. Find the distance L1 along the wire where the clip lead draws no current. The unknown voltage Vu is then: Vu=V L1/L External batteries can be used to provide a different battery configuration if desired.
• Availability: Available
• Loc codes: K6, ME2
• #### K6-01 SERIES AND PARALLEL LIGHTS - TWO BULBS

Demonstrates the effect of series and parallel connections of two identical light bulbs Read More
• #### K6-02: SERIES AND PARALLEL LIGHTS - FIVE BULBS

Demonstrate combinations of series and parallel light bulbs Read More
• #### K6-03 SERIES AND PARALLEL LIGHTS - BATTERY AND CLIP-ON WIRES

Shows voltages and currents in series & parallel circuits Read More

• #### K6-21: HEATING IN CURRENT-CARRYING WIRE

Show the conversion of electrical energy into heat Read More
• #### K6-22: ENERGY CONVERSION - IMMERSION HEATER

Demonstrate quantitatively the conversion of electrical energy into heat Read More
• #### K6-32: POTENTIOMETER

Find an unknown EMF using a voltage divider Read More
• #### K6-33: WHEATSTONE BRIDGE

Demonstrate operation of a Wheatstone bridge Read More
• #### K6-34: METER WITH SHUNTS AND MULTIPLIERS

Demonstrate how various voltmeters and ammeters are constructed Read More
• #### K6-35: VOLTAGE DIVIDER

Show how a voltage divider can be used to produce any voltage up to the maximum of the source Read More
• #### K6-36: VISIBLE AMMETER

See some of the important parts inside an ammeter Read More
• #### K6-41: DIODE RECTIFIERS AND FILTERS

Demonstrate rectification of 60 Hz AC by a diode and by a bridge rectifier Read More
• #### K6-42: SINE WAVE AND RECTIFIED SINE WAVE

Show the AC output from a generator and how it is converted to full-wave rectified AC using a split ring commutator Read More
• #### K6-44: SPECTRUM OF RECTIFIED SINE WAVE

Display the difference in the sound and in the spectrum of a pure sine wave voltage and a full-wave rectified voltage Read More
• #### K6-51: KIRCHHOFF'S LAWS

Apply Kirchhoff's laws to a simple two-loop problem Read More
• #### K6-52: IMPEDANCE MATCHING - BATTERY AND JOULEMETER

Demonstrate that the power transmission is maximized when the source impedance and the load impedance are equal Read More
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