Q. 184.7( 3 Votes )

# Paheli took a wir

Answer :

(i) No, as we know that resistance is directly proportional to length & H=I2RT where H is the heat/energy; I am current; R is the resistance and T is the time. Since Paheli has a wire which of larger length; hence it will increase more resistance. As current is the same in both the cases, so deciding factor for heat produced is resistance. Hence, Paheli circuit will produce more heat.

(ii) No, as we know that resistance is directly proportional to length and inversely proportional to area. Moreover, H=I2RT where H is the heat/energy; I am the current; R is the resistance and T is the time. Since the wire having more thickness will have less resistance, so less heat will be produced.

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