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Author Question: When an external resistor of resistance R1 = 14 is connected across the terminals of a battery, ... (Read 51 times)

Chloeellawright

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on: Jul 29, 2018
When an external resistor of resistance R1 = 14  is connected across the terminals of a battery, there is a current of 6.0 A through the resistor.
 
  When a different external resistor of resistance R2 = 64.4  is connected instead, the current is 2.0 A. Calculate (a) the emf of the battery and (b) the internal resistance of the battery.

Question 2

During each cycle of operation, a refrigerator absorbs 230 J of energy from the freezer and expels 356 J of energy to the room. How much work input is required in each cycle?
 
  A) 712 J
  B) 586 J
  C) 460 J
  D) 126 J


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yasmin

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Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 150 V (b) 11

Answer to Question 2

D


Chloeellawright

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Reply 2 on: Jul 29, 2018
Wow, this really help

tkempin

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Reply 3 on: Yesterday
:D TYSM

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