EEE :: ohms-law
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When 12 V are applied across a 68
resistor, the current is -
Approximately how much current flows through a 3.3 M
resistor across a 30 V source? -
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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What is the approximate filament resistance of a light bulb if it operates from a 110 V source and 0.6 A of current is flowing?
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What is the approximate resistance of a rheostat if the voltage source is 18 V and the current is 220 mA?
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