The current through tungsten filament lamp connected to a 12 V accumulator of negligible resistance is 3.0 A. Calculate :
the resistance of the filament,

Explanation

To solve the problem, we will use Ohm's law, which states that the voltage (V) across a conductor is equal to the current (I) flowing through it multiplied by its resistance (R). The formula can be expressed as:

\[ V = I \times R \]

We can rearrange this formula to solve for resistance (R):

\[ R = \frac{V}{I} \]

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