To what minimum resistance value can the rheostat be set
A 120 V lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 A fuse.
To what minimum resistance value can the rheostat be set without blowing the fuse? Assume a lamp resistance of 20 ohms.
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a 120 v lamp-dimming circuit is controlled by a rheostat and protected from excessive current by a 3 a fuseto what
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