An RC circuit is designed to operate an alarm in a house. The alarm activates when the current through it exceeds 120uA. The alarm is powered by a 9V DC source which is connected to a limiting resistor of 10 k2. One end of the 10 k2 resistor and the other end of the switch is connected to a parallel combination of an 80uF capacitor and a variable resistor R. The variable resistor is connected in series to the alarm, which has a resistance of 4 k2. If the variable resistor has an operating range of 0
An RC circuit is designed to operate an alarm in a house. The alarm activates when the current through it exceeds 120uA. The alarm is powered by a 9V DC source which is connected to a limiting resistor of 10 k2. One end of the 10 k2 resistor and the other end of the switch is connected to a parallel combination of an 80uF capacitor and a variable resistor R. The variable resistor is connected in series to the alarm, which has a resistance of 4 k2. If the variable resistor has an operating range of 0
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter18: Resistive-inductive Parallel Circuits
Section: Chapter Questions
Problem 1PA: Incandescent lighting of 500 W is connected in parallel with an inductive load. A clamp-on ammeter...
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