defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Physics Current, Resistance and Electricity Resistance and Resistivity
Water boils in an electric kettle in 20 minutes after being switched on. Using the same main supply, the length of the heating element should be ________ to ________ times of its initial length if the water is to be boiled in 15 minutes.
1
increased, \(\frac{3}{4}\)
2
increased, \(\frac{4}{3}\)
3
decreased, \(\frac{3}{4}\)
4
decreased, \(\frac{4}{3}\)