The lamp is rated for 6 V and 4 A. What is the resistance of the lamp?
September 21, 2021 | education
| Let’s apply Ohm’s Law. It describes the relationship between basic electrical quantities: current strength, voltage and circuit resistance.
I = U / R, where
I is the strength of the current flowing in the conductor,
U is the voltage applied to the conductor,
R is the resistance of the conductor.
Let us express the resistance from the formula:
R = U / I;
R = 6/4 = 1.5 ohms.
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