If a 60.0 W light bulb is connected to a 110.0 V power source, what current does the light bulb draw

0.55A

Explanation:

If a 60.0 W light bulb is connected to a 110.0 V power source, what current does the light bulb draw

Power = IV

Where I = current and v = voltage

P= IV

From question

P= 60W , V = 110v , I = ?

If P = IV

Input values into the equation

60 = I × 110

Divide both sides by 110

I = 60 ÷ 110

I = 0.55A

Ampere (A)  is the S. I unit of current

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speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.