Question

A wire is connected to a battery between the points M and N as shown in figure (1). The same wire is bent in the form of a square and then connected to the battery between the points M and N as shown in figure (2). Which of the following quantities increases? 

• A. Heat produced in the wire and resistance offered by the wire
• B. Resistance offered by the wire and current through the wire
• C. Heat produced in the wire, resistance offered by the wire and current through the wire
• D. Heat produced in the wire and current through the wire

Hint:

Resistance depends on the effective conducting path taken by the current.

Answer 1

The Correct Option is A

Step 1: Bending the wire increases its effective resistance due to additional bends and redistribution of current paths.
Step 2: With increased resistance, more electrical energy is dissipated as heat in the wire.
Step 3: Hence both resistance and heat produced increase.