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Ohm's Law Problems
Home>Engineering homework help>Electrical Engineering homework help
Question 1 (2.5 points)
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An alarm clock draws 0.5 A of current when connected to a 120 volt circuit.
Calculate its resistance.
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Question 2 (2.5 points)
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If one 9 volt battery is used in a circuit with a total resistance of 39 ohms, what is the current in the circuit?
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Question 3 (2.5 points)
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A waffle iron has 12 amp current. If the resistance of the coils is 10 ohms what must the voltage be?
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Question 4 (2.5 points)
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The wire in a series circuit has a resistance of 8 ohms and the light bulb in the circuit has a resistance of 14 ohms. A 66 volt battery provides energy to the entire circuit. What is the current through the entire circuit?
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Question 5 (2.5 points)
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The break light on a car is connected to a 12-V battery. If the resulting current is 0.4 amps, what is the resistance of the brake light?
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Question 6 (2.5 points)
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A circuit has a resistance of 30 ohms and a current of 0.05 amps, what is the voltage of the battery?
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Question 7 (2.5 points)
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An electric heater works by passing a current of 100 amp though a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it?
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Question 8 (2.5 points)
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What current flows through a hair dryer plugged into a 120 Volt circuit if it has a resistance of 25 ohms?
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Question 9 (2.5 points)
Question 9 Unsaved
A subwoofer needs a household voltage of 110 V to push a current of 5.5 amps through its coil. What is the resistance of the subwoofer?
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Question 10 (2.5 points)
Question 10 Unsaved
If three 1.5 volt batteries are put into a flashlight and the resistance across the light bulb is 30 ohms, what is the current going through the light bulb?
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