Two electric lamps A and B marked 220 V, 100 W and 220 V, 60 W respectively. Which of the two lamps has higher resistance ?

Explanation

To determine which of the two lamps has a higher resistance, we can use the formula for electrical power, which relates power (P), voltage (V), and resistance (R):

\[ P = \frac{V^2}{R} \]

From this formula, we can rearrange it to find the resistance:

\[ R = \frac{V^2}{P} \]

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