Question

OUT OF THREE BULBS 25W,60W,100W WHICH BULB HAS LEAST RESISTANCE?​

Answer 1

Answer:

100 W

Explanation:

as the bulbs are connectd in parallel,

P = V^2 / R

as voltage is constant,

power is inversely proportional to resistance

as a result, 100 W has least resistance

Answer 2

Answer:

100 w bulb has the least resistance

Explanation:

• Theoretically, the resistance of the lightbulb can be determined using the formula  $R = \frac{V^{2} }{P}$
• Using a multimeter, we test the resistance of such a bulb and compare the result to the value predicted theoretically.
• The bulbs' resistance does not alter in any way. Instead, what changes is the circuit's effective resistance.
• The filament of a regular bulb is made of thin tungsten.
• On an atomic level, the current's travelling electrons bump into every stationary atom in the circuit, increasing the vibratory rate of those atoms.
• The filament is simply a very thin, very resistive wire that vibrates as a result of collisions with the travelling electrons, heating it up and causing it to generate light.

$P = \frac{V^{2} }{R}$

Voltage is constant at this stage.

Power is inversely proportional to resistance.

Therefore 100 W has the least resistance.

Final answer:

100 W bulb has the least resistance.

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