An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 16-W LED bulb can replace a 100-W incandescent bulb or a 24-W CFLbulb. All threebulbsproduce 1600 lumens of light. What is the current through each bulbwhen placed in a circuitwith a 110-Vsource

LED bulb = 0.145 A

Incandescent bulb = 0.909 A

CFL bulb = 0.218 A

Explanation:

Given:

Power rating of LED bulb (P₁) = 16 W

Power rating of incandescent bulb (P₂) = 100 W

Power rating of CFL bulb (P₃) = 24 W

Terminal voltage across the circuit (V) = 110 V

We know that, power is related to terminal voltage and current drawn as:

Express this in terms of 'I'. This gives,

Now, calculate the current drawn in each bulb using their respective values.

For LED bulb,

So, current drawn is given as:

For incandescent bulb,

So, current drawn is given as:

For CFL bulb,

So, current drawn is given as:

Therefore, the currents drawn through LED bulb, incandescent bulb and CFL bulb are 0.145 A, 0.909 A and 0.218 A respectively.

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