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why heat produced at junction of two different conductor.
what care should be taken to minimize it.

Answer Posted / pradeep kumar rawat

at the junction of two conduntor some gap are formed at the
junction point, due to this gap some air take place and
ionised by other ions which is flowing in two conductor,air
between two conductor ionised and current posses through
one conductor to other conductor and heat produces, due to
this at the junction of two conductor heat produced.

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