Connect three bulbs with a resistance of 60 Ω to a DC voltage source, as shown in the figure. An ammeter with an internal resistance of 20 Ω, which is included in the circuit at point X, shows a current of 0.15 A. What is the driving voltage of the source?
Connect three bulbs with a resistance of 60 Ω to a DC voltage source, as shown in the figure. An ammeter with an internal resistance of 20 Ω, which is included in the circuit at point X, shows a current of 0.15 A. What is the driving voltage of the source?
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Connect three bulbs with a resistance of 60 Ω to a DC voltage source, as shown in the figure. An ammeter with an internal resistance of 20 Ω, which is included in the circuit at point X, shows a current of 0.15 A. What is the driving voltage of the source?
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