5J20.20 - Lamps in Series and Parallel with Inductor

Lamps in series/parallel with L

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PIRA Classification: 5J20.20

Description: A 40 W bulb is placed in series with a 90 V battery and a 20 H inductor. A 15 W bulb is placed across the inductor. When the knife switch is closed, the 15 W bulb flashes momentarily, then dims. A short time later, the 40 W bulb lights. When the switch is opened, the 15 W bulb will flash due to the collapse of the field.

Special Instructions: None

Condition: Good

Setup time: 2 minutes