Question

Answer the following questions : a) State the characteristics of a parallel combinations of resistors. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ b) Write any three precautions to be taken while using electricity. __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ c) Copper and other metals are good conductors of electricity. Why? __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ ______________________________________________________________​

Answer 1

Answer:

The voltage (potential difference) across each of the resistors is the same. (2) The total current is equal to the sum of the currents through the individual resistors. (3) The reciprocal of the effective resistance of the combination is equal to the sum of the reciprocals of the individual resistances ( Answer no 1 )

Avoid water at all times when working with electricity. Never touch or try repairing any electrical equipment or circuits with wet hands. It increases the conductivity of the electric current.

2. Never use equipment with frayed cords, damaged insulation or broken plugs.

3. If you are working on any receptacle at your home then always turn off the mains. It is also a good idea to put up a sign on the service panel so that nobody turns the main switch ON by accident.

4. Always use insulated tools while working

6. Always use appropriate insulated rubber gloves and goggles while working on any branch circuit or any other electrical circuit. ( answer no 2)

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. ... For this reason, they are known as free electrons. They are also known as conduction electrons, because they help copper to be a good conductor of heat and electricity ( answer no 3 )

Explanation:

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