Electricity and Circuits - Class 6 - Science
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Extra Questions - Electricity and Circuits | NCERT | Science | Class 6
Humans are good conductors of electricity. Justify why are humans good conductors of electricity.
Humans conduct electricity mainly due to the presence of salts and impurities in their bodies, which facilitate the movement of charge. Firstly, it's important to note that human skin serves as a rather effective insulator. However, the body internally contains ionized water and various electrolytes that enhance conductivity.
Though our bodies may not conduct electricity as effectively as metals, they nonetheless allow for electrical current flow due to these ions and electrolytes. If electrical current passes through the human body, the experience can be extremely dangerous and painful. Therefore, while comparatively less effective, humans are indeed capable of conducting electricity.
Show how you would connect three resistors, each of resistance $6 \Omega$, so that the combination has a resistance of (i) $9 \Omega$ (ii) $2 \Omega$
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Sign up nowQuestions & Answers - Electricity and Circuits | NCERT | Science | Class 6
Fill in the blanks :
(a) A device that is used to break an electric circuit is called _______________.
(b) An electric cell has _______________ terminals.
(a) A device that is used to break an electric circuit is called a switch.
(b) An electric cell has two terminals.
Mark 'True' or 'False' for the following statements:
(a) Electric current can flow through metals.
(b) Instead of metal wires, a jute string can be used to make a circuit.
(c) Electric current can pass through a sheet of thermocol
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Sign up nowThe handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?
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