This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: When an external resistor of resistance R1 = 14 is connected across the terminals of a battery, ... (Read 77 times)

Chloeellawright

  • Hero Member
  • *****
  • Posts: 588
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yasmin

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 150 V (b) 11

Answer to Question 2

D


Chloeellawright

  • Member
  • Posts: 588
Reply 2 on: Jul 29, 2018
Excellent

mohan

  • Member
  • Posts: 362
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

The average adult has about 21 square feet of skin.

Systemic acquired resistance to pathogen attack. Systemic acquired resistance to pathogen attack.
external combustion engine external combustion engine
Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ... Measuring the resistance of an HEI pickup coil using a digital multimeter set to the ohms position. ...
Structures of the external eye Structures of the external eye
Structural of external, middle and inner ear Structural of external, middle and inner ear
The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ... The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ...
Video: Protein Structure - Primary, Secondary, Tertiary and Quaternary

For a complete list of videos, visit our video library