A voltage with an amplitude of 10 V is applied to an electric stove, the resistance
| August 29, 2021 | education
A voltage with an amplitude of 10 V is applied to an electric stove, the resistance of which is 90 ohms, determine the effective value of the current.
1. Let’s determine the effective voltage value:
Ud = Um / √2, where Um is the amplitude value of the voltage.
Ud = Um / √2 = 10 / √2 = 7.07 V.
2. Then the current strength according to Ohm’s law:
Id = Ud / R, substitute the numerical values:
Id = Ud / R = 7.07 / 90 = 0.078 A.
Answer: current strength 0.078 A or 78 mA.
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