Question

When a potential difference of 2V is applied across the ends of a wire of 5m length a current of 1A is found to flow through it. Calculate (1)the resistance per unit length of the wire (2)the resistance of 2m length of the wire (3)the resistance across the ends of the wire if it is doubled on itself

Answer 1

Answer:

Answer :

(i)

<br> (ii)

<br> (iii)

.

Solution :

(i)

. Resistance//unit length

<br> (ii) Resistance of

length of the wire

<br> (iii) When the wire is doubled on itself, it will be equivalent to two resistances (each of value

) parallel to each other. The resultant resistance across the ends of this folded wire

Explanation:

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