Science at Home

Magnetism and electricity
Questionarium
 

 

    1. In the following list: iron, cobalt, nickel and magnetite we have:
 
a magnetic material   three magnetic materials
  four magnetic materials

 

    2. The components in a serie electric circuit share:
 

the same resistance   the same voltage
  the same current intensity

 

    3. The components in a parallel electric circuit share:
 

the same voltage  the same current intensity
  the same resistance

 

    4. The fuel cells produce electricity using:
 

hydrogen and oxygen  two electrodes made of different metals
  the solar light

 

    5. The current intensity increases when:
 

the resistance increases   the potential decreases
  the resistance decreases

 

    6. One battery that can be recharged is:
 

primary   dry   secondary

 

    7. An Ammeter is an instrument that measures:
 

the potential   the current intensity
  the current intensity and the potential

 

    8. The resistance of a thermal resistance decreases when the temperature:
 

increases   decreases   stays constant

 
Time:



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