The lamp is rated for 6 V and 4 A. What is the resistance of the lamp?

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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