Question

Лампочка карманного фонаря расчитана на напряжение U=3В и силу тока I=0,2А.Какую мощность Р потребляет лампочка?

Answer 1

P = I U = 0.6 Вт
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Answer 2

Calculating Power Consumption of the Bulb

To calculate the power consumption of the bulb, we can use the formula:

P = U * I

Where: - P is the power consumption in watts (W) - U is the voltage in volts (V) - I is the current in amperes (A)

Substituting the given values: - U = 3V - I = 0.2A

We can calculate the power consumption using the given formula:

P = 3V * 0.2A

This gives us:

P = 0.6W

So, the power consumption of the bulb is 0.6 watts.