 
          16
        
        
          
            Look at the following formulas and identify the law
          
        
        
          P = VI
        
        
          
            or
          
        
        
          P = I
        
        
          2
        
        
          R
        
        
          E=dB/dt
        
        
          F = kq
        
        
          1
        
        
          q
        
        
          2
        
        
          /r
        
        
          2
        
        
          
            Give the formulas to the following definitions
          
        
        
          
            1.
          
        
        
          
            Ohm's law
          
        
        
          states that the
        
        
        
          through a
        
        
        
          between two
        
        
          points is directly
        
        
        
          to the
        
        
        
          across the two points.
        
        
          I=
        
        
          
            2.
          
        
        
          
            Joule-Lenz law
          
        
        
          states that the
        
        
        
          of heating generated by
        
        
          an
        
        
        
          equals the product of its
        
        
        
          and the
        
        
          square of the current.
        
        
          P=
        
        
          
            Look at the list of words. What do all the words in the list have in
          
        
        
          
            common? Use them to talk about laws
          
        
        
          to state
        
        
          induction
        
        
          interaction
        
        
          electrostatic
        
        
          to determine
        
        
          electrolysis
        
        
          energy conservation
        
        
          
            Work in groups of 3-4. Choose one of the fundamental laws. State
          
        
        
          
            and explain it. Tell about its applications. Prove that this law is relevant to
          
        
        
          
            electricity
          
        
        
          
            Compare and discuss your results with your groupmates
          
        
        
          
            Read the following information before doing your research
          
        
        
          When you are researching a new topic and you don't have a list of course
        
        
          resources, you will need to find information that will be
        
        
          
            appropriate
          
        
        
          for your
        
        
          goals and will be
        
        
          
            of good quality
          
        
        
          . Some sources of information are regarded as
        
        
          more
        
        
          
            reliable
          
        
        
          than others. Some sources of information have a higher level of
        
        
          
            security
          
        
        
          . Evaluate information for its
        
        
          
            relevance, completeness and usefulness
          
        
        
          to
        
        
          your work.
        
        
          Ask yourself the following questions:
        
        
          •
        
        
          
            
              Will this information be useful?