An electric bulb is rated at 200 V-100 W...

An electric bulb is rated at `200 V-100 W`. What is its resistance ? Five such bulbs burn for four hours. What is the electrical energy consumed ? Calculate the cost if the rate is `50` paise per unit.

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An electric bulb is rated at `200 V-100 W`. What is its resistance ? Five such bulbs burn for four hours. What is the electrical energy consumed ? Calculate the cost if the rate is `50` paise per unit.

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