Answer:
E = 115.2 kJ
Explanation:
Given that,
Resistance, R = 15 ohms
Voltage, V = 120 V
We need to find the energy supplies by the heater in 2 minutes or 120 s.
The formula for the thermal energy supplies is given by :
[tex]E=I^2Rt[/tex]
We know that, V = IR
So,
[tex]E=\dfrac{V^2t}{R}\\\\E=\dfrac{(120)^2\times 120}{15}\\\\E=115200\ J\\\\E=115.2\ kJ[/tex]
So, 115.2 kJ of energy is supplied.
