An electric kettle, connected to a 240V mains, produces 6.0 x 105J of heat energy to boil a quantity of water in 5 minutes. Find the resistance of the kettl...

An electric kettle, connected to a 240V mains, produces 6.0 x 105J of heat energy to boil a quantity of water in 5 minutes. Find the resistance of the kettle.

Answer Details

Heat energy = Electrical energy

6 x 105 = $\frac{V^2}{R}$t

R = $\frac{240\times 240\times 5\times 60}{6\times 105}$

= 28.8$\Omega$