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Current Divider Circuits
10 questions By Tony R. Kuphaldt
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Question 10 of 10
Suppose an ammeter has a range of 0 to 1 milliamp, and an internal resistance of 1000 Ω:
Show how a single resistor could be connected to this ammeter to extend its range to 0 to 10 amps. Calculate the resistance of this “range” resistor, as well as its necessary power dissipation rating.
Reveal answer
A power dissipation rating of at least 10 watts is necessary for this application.
Notes:Ammeter ranging is a very practical example of current divider circuitry.
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