Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

ICSE Class 10 Answered

Five 100 w bulbs are used for 10 hours every day for 30 days. Find  the cost of electricity if the rate is Rs.4.00 per unit.  
Asked by Masummannan747 | 05 Apr, 2019, 12:44: PM
Expert Answer
Five bulbs consume the power of 100 W each.
 
The total power consumed by 5 bulbs = 5 x 100 = 500 W = 0.5 kilowatt
 
Electrical energy consumed daily is, E = P x t = 0.5 kW x 10 hours = 5 kWh.
 
Thus, total electrical energy consumed for 30 days = 5 kWh x 30 days = 150 kWh or 150 units.
 
The cost of 1 unit of electricity = Rs. 4
Thus, the total cost of electricity = Rs. 4 x 150 = Rs. 600
 
Answered by Shiwani Sawant | 05 Apr, 2019, 03:04: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
ICSE 10 - Physics
'A geyser is rated 240 W-220 V'. Explain the meaning of this statement.
Asked by jayeshsah1995 | 18 Mar, 2023, 08:00: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
a current of 4 amp flows in a wire of resistance 60 2. calculate: (a) power dissipated in the wire. (b) potential difference across the wire. (c) electrical energy consumed in 2 minutes.
Asked by ashrafali8060 | 04 May, 2021, 06:53: PM
ANSWERED BY EXPERT
ICSE 10 - Physics
Define Power
Asked by zainak698 | 27 Oct, 2020, 11:52: AM
ANSWERED BY EXPERT
ICSE 10 - Physics
exercise 8b q 14
Asked by nilesh.dhote74 | 13 May, 2020, 11:16: AM
ANSWERED BY EXPERT
ICSE 10 - Physics
Five 100 w bulbs are used for 10 hours every day for 30 days. Find  the cost of electricity if the rate is Rs.4.00 per unit.  
Asked by Masummannan747 | 05 Apr, 2019, 12:44: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt