Question:

When a potential difference V is applied across a wire of resistance R, it dissipates energy at a rate W. If the wire is cut into two halves and these halves are connected mutually parallel across the same supply, the same supply, the energy dissipation rate will become:

(1) 1/4W 

(2) 1/2W 

(3) 2W 

(4) 4W

                                                JEE-2024

Solution:                
When a potential difference V is applied across a wire of resistance R, it dissipates energy at a rate W. If the wire is cut into two halves and these halves are connected mutually parallel across the same supply, the same supply, the energy dissipation rate will become: (1) 1/4W (2) 1/2W (3) 2W (4) 4W JEE-2024

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