Whether the work done by the system during the process A → B is positive, negative or zero.

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Answer 1

Question

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

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4.) The diagram shows the electric field lines of a positively charged conducting sphere of radius R and charge Q. A B Points A and B are located on the same field line. A proton is placed at A and released from rest. The magnitude of the work done by the electric field in moving the proton from A to B is 1.7×10-16 J. Point A is at a distance of 5.0×10-2m from the centre of the sphere. Point B is at a distance of 1.0×10-1 m from the centre of the sphere. (a) Explain why the electric potential decreases from A to B. [2] (b) Draw, on the axes, the variation of electric potential V with distance r from the centre of the sphere. R [2] (c(i)) Calculate the electric potential difference between points A and B. [1] (c(ii)) Determine the charge Q of the sphere. [2] (d) The concept of potential is also used in the context of gravitational fields. Suggest why scientists developed a common terminology to describe different types of fields. [1]

3.) The graph shows how current I varies with potential difference V across a component X. 904 80- 70- 60- 50- I/MA 40- 30- 20- 10- 0+ 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VIV Component X and a cell of negligible internal resistance are placed in a circuit. A variable resistor R is connected in series with component X. The ammeter reads 20mA. 4.0V 4.0V Component X and the cell are now placed in a potential divider circuit. (a) Outline why component X is considered non-ohmic. [1] (b(i)) Determine the resistance of the variable resistor. [3] (b(ii)) Calculate the power dissipated in the circuit. [1] (c(i)) State the range of current that the ammeter can measure as the slider S of the potential divider is moved from Q to P. [1] (c(ii)) Describe, by reference to your answer for (c)(i), the advantage of the potential divider arrangement over the arrangement in (b).

Answer 2

Question

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

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Answer 3

Question

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

Expert Solution & Answer

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Answer 5

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

Answer 6

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

Answer 7

Chapter 18, Problem 73GP

(a)

To determine

Whether the work done by the system during the process A→B is positive, negative or zero.

Answer 8

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

Answer 9

(b)

To determine

Whether the work done by the system during the process B→C is positive, negative or zero.

Answer 10

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

Answer 11

(c)

To determine

Whether the work done by the system during the process C→A is positive, negative or zero.

Answer 12

Expert Solution & Answer

Answer 13

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Answer 14

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Answer 15

Whether the work done by the system during the process A → B is positive, negative or zero.

Solution Summary: The author explains the formula to determine whether the work done by the system during the process Ato B is positive, negative or zero.

Concept explainers

Whether the work done by the system during the process A→B is positive, negative or zero.

Whether the work done by the system during the process B→C is positive, negative or zero.

Whether the work done by the system during the process C→A is positive, negative or zero.

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Chapter 18 Solutions