Physics

Physics, 08.07.2019 06:00, brasherfamily14

What is the potential difference across a 2.0-ohm resistor that draws 2.0 coulombs of charge per second

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A3-ohm resistor and a 6-ohm resistor are connected in parallel across a 9-volt battery. which statement best compares the potential difference across each resistor? (1) the potential difference across the 6-ohm resistor is the same as the potential difference across the 3-ohm resistor. (2) the potential difference across the 6-ohm resistor is twice as great as the potential difference across the 3-ohm resistor. (3) the potential difference across the 6-ohm resistor is half as great as the potential difference across the 3-ohm resistor. (4) the potential difference across the 6-ohm resistor is four times as great as the potential difference across the 3-ohm resistor.

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Power rating of a resistor. the power rating of a resistor is the maximum power the resistor can safely dissipate without too great a rise in temperature and hence damage to the resistor. (a) if the power rating of a [email protected] ω resistor is 5.0 w, what is the maximum allowable potential difference across the termi- nals of the resistor? (b) a [email protected]ω resistor is to be connected across a 120-v potential difference. what power rating is required? (c) a [email protected]ω and a [email protected]ω resistor, both rated at 2.00 w, are connected in series across a variable potential difference. what is the greatest this potential difference can be without overheating either resistor, and what is the rate of heat generated in each resis- tor under these conditions?

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The power rating of a resistor is the maximum power the resistor can safely dissipate without too great a rise in temperature and hence damage to the resistor. a) if the power rating of a 15kω resistor is 5.0 w, what is the maximum allowable potential difference across the terminals of the resistor? express your answer using two significant figures. b) a 9.0kω resistor is to be connected across a 120-v potential difference. what power rating is required? express your answer using two significant figures. c) a 100.0 ω and a 150.0 ω resistor, both rated at 2.00 w, are connected in series across a variable potential difference. what is the greatest this potential difference can be without overheating either resistor? d) what is the rate of heat generated in a 100.0 ω resistor under these conditions? e) what is the rate of heat generated in a 150.0 ω resistor under these conditions?

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