A `20 V` 5 watt lamp is used in ac main `220 V` and frequency 50 c.p.s. What pure resistance
A `20 V` 5 watt lamp is used in ac main `220 V` and frequency 50 c.p.s. What pure resistance should be included in place of the above passive elements so that the lamp can run on its rated voltage?
A `20 V` 5 watt lamp is used in ac main `220 V` and frequency 50 c.p.s. What pure resistance should be included in place of the above passive elements so that the lamp can run on its rated voltage?