Soru
Question 5. An electrical heater having a resistance of 2Omega is connected to a direct source of 10V Find a.The power of the electric heater. (5p) b. Find the electrical energy dissipated in 3 seconds. (5p)
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Kıdemli · 9 yıl öğretmeni
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Cevap
a. The power of the electric heater can be calculated using the formula:
where
is the power,
is the voltage, and
is the resistance.Given that the resistance
is
and the voltage
is
, we can substitute these values into the formula:
Therefore, the power of the electric heater is
.b. The electrical energy dissipated in 3 seconds can be calculated using the formula:
where
is the energy,
is the power, and
is the time.Given that the power
is
and the time
is
seconds, we can substitute these values into the formula:
Therefore, the electrical energy dissipated in 3 seconds is
.