The current passing through the lamp filament is 4 A. If the voltage across the lamp is 12 V, then the electrical resistance of the lamp filament.
These tasks: I (the current that passes through the filament of the taken lamp) = 4 A; U (voltage across the lamp) = 12 V.
The electrical resistance of the lamp filament at the specified voltage is determined by the formula: R = U / I.
Calculation: R = 12/4 = 3 ohms.
Answer: At a voltage of 12 V, the electrical resistance of the lamp filament will be 3 ohms.
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