Whatsonna Chapter 20-21 Test | Go Up

Key:

20:3 - chapter 20, problem 3

21-3 - read section 21-3 - conceptual question answered with words

 

 

Do 3 out of 4:

1. A solenoid

A) Induced EMF  (21:6), Like Prequiz 21.1 #5

B) Alternators (general) Study section (21-5)

C) Transformer voltage and windings. Like problem 21:30 Like Prequiz 21.2 #4

D) Current in secondary of a transformer Study section 21-7, like problem 21:32, Like Prequiz 21.2 #5

E) Calculate the energy lost by transmission lines (21-7: Study example 21-12 on p. 597)

 

 

2. Electron accelerated through a potential

A) Accelerated ion problem.  (eV = 1/₂mv² formulas given on test) Like problem (17:11)

B) Motion of moving charged particle in a magnetic field (20:9), Like Prequiz 20.2 #4

C) Electric field to make it go straight. (20:16) Like Prequiz 20.2 #4-5

D and E - the Hall effect.  Study my video, and

 

 

 

IBII 200702 Hall Effect Explained

Also

http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/hall.html

 

 

3. Changing flux in a loop of wire

A) What is the •EMF induced in the loop? (21:6), Like Prequiz 21.1 #5

B) What •current flows?  Indicate the •direction of the current with an arrow. Prequiz 21.1 #5

C) Power generated (like the questions on Prequiz 21.1 #5), Application of energy to force. (like the many small questions at the end of  Prequiz 21.1 #5)

D) Metal bar sliding through magnetic field.  Like problem PreQuiz 21.2 #2

E) Indicate (CW or ACW) the direction of the induced current. Like Prequiz 21.1 #1

 

 

4. 

A) and B) Force on current carrying wire.  Like Prequiz 20.2 #1, Like Problem 20:3

C) Force on a charged particle moving in a magnetic field.  Like Prequiz 20.2 #3

D) Force on current carrying wire.  like problem 20:3, but with direction.  Like Prequiz 20.2 #2

E) Find the direction of the missing quantity using the right hand rule.  Like Prequiz 20.1 #4