A bulb is rated at 200v 40w what is it resistance.5 such bulb are lighted for 5 hr.Calculate electrical energy
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ANSWER: 1kwh
step by step explanation :
___________________________
The spent power of 5 bulbs are ,
= ( 5 × 40 × 5 ) wh
= 1000 wh
= ( 1000 / 1000 ) kWh [ 1 wh = 1/1000 kWh ]
= 1 kWh
= 1 BoT unit
the energy of the bulb is 1 BOT unit
hope it helps
step by step explanation :
___________________________
The spent power of 5 bulbs are ,
= ( 5 × 40 × 5 ) wh
= 1000 wh
= ( 1000 / 1000 ) kWh [ 1 wh = 1/1000 kWh ]
= 1 kWh
= 1 BoT unit
the energy of the bulb is 1 BOT unit
hope it helps
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