SOLUTION: A lamp is marked 12V/10W. the lamp is connected to 24V accumulator. in series with lamp you must then connect a resistor. Calculate the resistance of the resistor!

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Question 388326: A lamp is marked 12V/10W. the lamp is connected to 24V accumulator. in series with lamp you must then connect a resistor.
Calculate the resistance of the resistor!

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
A lamp is marked 12V/10W. the lamp is connected to 24V accumulator. in series with lamp you must then connect a resistor.
Calculate the resistance of the resistor!
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Since 12V is 1/2 of 24V, it'll be the same as the lamp's resistance.
10W/12V = 5/6 amps
R = 12/(5/6) = 14.4 ohms

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