PDF chapter test TRY NOW

Test whether the given material allows current to pass through it or not:
  1. Collect samples of different types of materials such as coins, cork, rubber, glass, keys, pins, plastic scale, wooden block, aluminium foil, candle, sewing needle, thermo Col, paper and pencil lead.
  2. One by one bring the free ends of the wires of your tester in contact with two ends of the samples you have collected.
  3. Make sure that the two wires do not touch each other while you are doing so.
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Placing a tester in between the wires
  
Does the bulb glow in each case? Make a table in your notebook similar to table, and record your observations.
 
Object used in the place of switchMaterial it is made ofBulb glows (Yes/No)
Coins  
Cork  
Rubber  
Glass  
Keys  
Pins  
Plastic scale  
Wooden block  
Aluminium foil  
Candle  
Sewing needle  
Thermo Col  
Paper  
Pencil lead  
 
Important!
This is a activity-based exercise. Write the answer in a sheet and compare it with the solution given below.