Answer to Question #87057 in Electric Circuits for jagvir dhatt

Question #87057

A lamp is designed to operate on 6V and draw a current of 40 mA. It is connected to 9V. What size resistor must be connected to in series. Hint: find the resistance of the lamp when it is drawing 40 mA.

Expert's answer

"R=\\frac{9V - 6V}{40mA} = 75 Ohm"

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