The resistance of the lamp is 40 Ohm. What is the current strength in it if the voltage is 220V?
| August 20, 2021 | education
To find the current in the lamp used, we use Ohm’s law: I = U / R.
Values of variables: R – lamp resistance (R = 40 Ohm); U – voltage (U = 220 V).
Calculation: I = U / R = 220/40 = 5.5 A.
Answer: The current in the lamp used is 5.5 A.
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