A light bulb operating at a dc voltage of 120 V has a resistance of 200 ?. How much power is dissipated in this bulb?

A) 100 W
B) 60 W
C) 72 W
D) 14 mW
E) 7.2 W


C

Physics & Space Science

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How many galaxies are there in the part of the universe we can observe?

A. 20,000-50,000. B. 100,000-300,000. C. 50-100 billion. D. 50-100 million. E. About 10,000.

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A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. At the moment contact is made with the battery (a) the voltage across the capacitor is A

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The transitions of an electron in the hydrogen atom to the n = 1 level result in the

a. Lyman series. b. Balmer series. c. Paschen series. d. Bohr series.

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