As is rubber and wood are insulatores there are no free electron or currecnt carrless to then .Therefore carrect can and not flow through then On the other hand human body and earth are good conductor A current of `10 mA` or more passing thought human body can be fated A current will flow only if the circuit is complete
Read the above passage and answer the following position:
(i) How can one repair on free line wires?
(ii) Why is a current of `10mA` or more passage though human body fated?
(iii) What is the practical utility of this study?

Explanation

(i) To repair a live wire we should assume that no current flows through th ebody .The poson must wave intaliating hand glows of rubber and insulating shows of rubboer Then current will not pass through the body of the person and be will remain safe
(ii) A current of `10mA` or more passing through human body upsets the any nerse carents that regular the body moscular active activios Due to it the hand muscles contact and the person is unable to go off the live wires .This result in a severs shock to the person .which may be fatal,
(iii) The insulators work as protectors That is why a the electric wires used in a hour arre covent with insulating mateial to potect the person from the doctor contact of contact of the electric currennt The bodies of the electrons instraments like refrigerater electric oven are pervided with insudaces to evots leakuge of corrent from introment to earth c the insduring trads of wood or rubber to keep separete the live wires during speed wird is atoms