Question

Какое количество теплоты выделит за 30 мин спираль электроплитки, если сила тока в цепи 2 А, а напряжение 220 В?

Answer 1

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Answer 2

Calculation of Heat Generated by Electric Stove Coil

To calculate the amount of heat generated by an electric stove coil, we can use the formula:

Heat (Q) = Power (P) × Time (t)

The power (P) can be calculated using the formula:

Power (P) = Voltage (V) × Current (I)

Given that the current (I) is 2 A and the voltage (V) is 220 V, we can calculate the power (P):

Power (P) = 220 V × 2 A = 440 W.

Now, we can calculate the amount of heat generated in 30 minutes (t = 30 minutes = 0.5 hours):

Heat (Q) = Power (P) × Time (t) = 440 W × 0.5 hours = 220 Wh.

Therefore, the electric stove coil will generate 220 watt-hours (Wh) of heat in 30 minutes.

Please note that this calculation assumes that all the electrical energy is converted into heat energy and that there are no other losses or inefficiencies in the system.

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