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

Explanation

To solve the problem, we will use the formula for electrical power. The power (P) consumed by an electrical device can be calculated using the formula:

\[ P = I \times V \]

where:
- \( P \) is the power in watts (W),
- \( I \) is the current in amperes (A),
- \( V \) is the voltage in volts (V).
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