JEE MAIN - Physics (2024 - 27th January Morning Shift - No. 19)
A wire of resistance $$\mathrm{R}$$ and length $$\mathrm{L}$$ is cut into 5 equal parts. If these parts are joined parallely, then resultant resistance will be :
$$\frac{1}{25} \mathrm{R}$$
$$\frac{1}{5} R$$
25 R
5 R
Објашњење
Resistance of each part $$=\frac{R}{5}$$
Total resistance $$=\frac{1}{5} \times \frac{\mathrm{R}}{5}=\frac{\mathrm{R}}{25}$$