Time

Content

Experiments

Resources

3 weeks

Electrostatics

·      the meaning of the following terms:

      electric charge, electric force, electric field strength, electric potential, induction, electric potential energy, electric potential difference, grounding (earthing), conductors and insulators.

·      charging an friction, contact and induction

·      charging an electroscope by contact and induction                                         

·      Coulomb's force Law                    

·      electric field strength                    

·      electric fields                                 

·     the laws of attraction and repulsion

·     model electric fields

·     predict the forced of particles placed in different physical situations

·     identify and discuss the everyday occurrence of electrostatic charge-benefits and problems

·     communicate electrical field information by means of drawing electric field lines between charges in various positions.

·     The following formulae

                         kq₁Q₂

     (a)     F =         r5

     (b)     E =  F/q =  kQ     

                                   r5      

                        KqQ                           

      (c)    U =      r

      (d)    V =   U   =   kQ

                         q          r                     

     (e)   V = Ed for parallel plates

Experiments

·    Static Electricity   

 & demonstrations

Manipulative Skills 

·    Use of an electroscope to detect the presence of charge

·    Charge an electroscope by contact and  induction

Text  -  Chapter 21

Videos

·     “Electricstatic forces”

·     “ Electric fields between

         two plates”

·     “ Electricity-

        Conductors & Insolation

        charging and discharging”

Other Texts

·      Physics: Principles and Problems

      ch 21,22

·      Elements of Modern Physics

      book 3 ch 1 to 3

·      Ingram Part 1 ch 6

Branch Activity 4

·      FOSP Book 1 ch 1

·      Gardiner Set 38

·      Walters ch 20

·      Essential Physics ch 23

·      Physics for a Modern World ch 13

Diagnostic Aid  No. 21, 22

3 weeks

Current Electricity

·      the meaning of terms:

      current, resistance, ammeter, voltmeter, electric circuit, power, emf, resistor, series resistors, parallel, resistors, capacitance, potential differences

·      the following units:

      ampere, ohm, watt, kilowatt hour, farad

·      work done in moving charges in electric fields

·      Ohm's Law                                           

·      Kirchoff's Laws                                  

·      Non-ohmic resistors                          

·      effect to temperature on resistance  

·      direction of conventional current flow   

·      energy of moving charges

      (½ mv² = qv)                                        

·      symbols for circuit components       

·      the heating effect of an electric current 

·      parallel and series circuits for resistance and capacitance

      (a)    representation

      (b)     characteristics                           

·      other circuit elements - Ammeter, Voltmeter

·      transmission of electric current AC/DC

·      the following formulae:

     (a) E = V/d      (b) R = V/I

     (c) W = Vq      (d) P=V1=1²R

     (e) Q = 1²Rt    (f) series resistance R=R₁+R₂+R₃ etc

     (g) parallel resistance: 1/R=1/R₁+1/R₂+1/R₃ etc

·      household electricity-circuits and cost

·      analyse circuit design

·      correctly sketch circuits components and diagrams

·      plot current/potential graphs to find resistance

Experiments

·      Ohm’s Law

·      Series Circuits

·      Parallel Circuits

·      Series-Parallel circuits

·      Charging and discharging a capacitor

Manipulative Skills 

·      Use of bread boards; resistors etc. to

(a)    Verify Ohm’s Law

(b)    Find the relationship between resistors in  series & parallel.

Text  -  Chapter 22

Videos

·     “Electricity ”

·     “Electric current & Circuits”

·     Mechanical Universe 6

      “ Magnetic fields”

Other Texts

·      Physics: Principles and Problems

      ch 22, 23

·      Elements of Modern Physics

      ch 1,2,3 Unit 10

·      Ingram Part 1 ch 7

·      FOSP Book 1 ch 11

·      Gardiner Set 40,41

·      Walters ch 22

Diagnostic Aid  No. 23, 24

5 weeks

Electronics

·      the following terms:

       semiconductor, solid state, thermionic emission, vacuum tube, hole, intrinsic semi conductor, doping, n-type semi conductor,

       p-type semi conductor, acceptor,

       p-n junction, junction diode, transistor, emitter, collector, base, light-emitting diode, resistor colour code, rectification, amplifier, integrated circuit, digital electronics, current gain, voltage gain

·      the properties and operation of a cathode ray oscilloscope

·      semi-conductor theory and diodes

      (a)    structure

      (b)    characteristics and biasing of diodes

(c)    use of diodes

·      half and full wave rectification

·      transistor

      (a)    structure

      (b)    characteristics

      (c)     uses

      (d)    b = I_c/I_b

      (e)    I_e  =   I_b + I_c                                     

·      logic circuits gates and associated mathematics                                           

·      use binary mathematics in conjunction with logic circuits.

·      analyse rectifying circuit diagrams to produce a graphical information

·      read circuit diagrams

·      read electrical meters

·      identify the application of electric logic circuits

Experiments

·      Current/voltage characteristics of a light emitting diode

·      Voltage/current characteristics of a diode

·      Rectifying circuits

·      The transistor as a voltage amplifier

Manipulative Skills 

·      Identify resistors according to color code

·      correctly connect the following components in electric circuits using a circuit board;

 npn transistor

 pnp transistors

 diodes

light emitting   diodes

 resistors

 capacitors

  zenode

  variable resistors

Text  -  Chapters 23 & 24

Other Texts

·      School notes

·      Elements of Modern Physics

      ch 11

·      Electronics for Physics Students

·      Essentials of Physics ch 27, 28

3 weeks

Electromagetism

·      the terms:

       ferromagnetic materials, domains, magnetic field, magnetic field strength, electromagnetism                         

·      magnetic field produced by:

       bar magnet, horseshoe magnet, earth, long straight conductor, parallel conductors solenoid                                         

·      general properties of magnets and magnetic fields                                               

·      right hand rule for finding the polarity of a solenoid                                          

·      right hand rule for location and direction of magnetic field produced by a conductor 

·      interaction of magnetic field        

·      vector nature of magnetic fields  

·      force on a current in a magnetic field     

·      force on a charged particle in a magnetic field

·      right hand palm rule for determining direction of a magnetic force on a current carrying conductor                        

·      force between parallel conductors          

·      applications of motion of particles in magnetic fields (a) CRO (b) mass spectrograph.

·      the following formulae:

(a)    F = B I l_^

               F   KI₂I₂                          kI

     (b)     l      d               (c)    B =  r

     (d)     F = qvB sinq

                    mv

      (e) r =   Bq                (f)    B = 2  pkNI

·      the principle of the electric motor and electric meter

·      experimentally determine magnitude and direction of magnetic field strength produced by

(a)          long straight conductor.

(b)          parallel conductors.

(c)          flat circular coil

(d)          solenoid.

·      predict the path of charged particles moving in magnetic fields        

Experiments

·      Magnetic fields around magnets

·     Magnetic fields around a current-wire </