Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • (a) An electric bulb is rated at 200 V; 100 W. What is its resistance ? (b) Calculate the energy consumed by 3 such bulbs if they glow continuously for 10 hours for complete month of November. (c) Calculate the total cost if the rate is `

(a) An electric bulb is rated at 200 V; 100 W. What is its resistance ?
(b) Calculate the energy consumed by 3 such bulbs if they glow continuously for 10 hours for complete month of November.
(c) Calculate the total cost if the rate is ` 6.50 per unit.

 

 

 

 
 
 
 
 

Answers (1)

(a)  Potential difference , V = 200 V .

Power of bulb , P = 100 W .

We need to find the resistance of the bulb.

We know ,

Power ,

(b) Now , we need to find the electric energy consumed by 3 bulbs in 10 hours for 30 days

 Total hours glowed=30*10=300

Energy consumed by 3 bulb=3*0.1*300=90KWh=90units

(c) Now, it is given that cost of one unit is 6.50 .

Therefore , total cost , 90*6.5=585

Posted by

Safeer PP

View full answer

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 10 board exams twice a year ‘relief’ or ‘burden’? Parents, schools share mixed views
anam-khan

CBSE Class 10 exams twice a year from 2026; 64.4% students in favor, second attempt optional

Latest Question