wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Find the cost of operating an electric toaster for 2 hours, if it draws a current of 8A on a 110V circuit. The cost of electric energy is Rs. 2.50 per kWh.

A
Rs.4.40
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Rs.6
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Rs.8.20
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Rs.2.20
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Rs.4.40
Given:
Current I=8 A
Voltage V=110 Volt
We know that,
Power P=V×I=110×8=880W
The electric toaster consumes 880 J in one second.
So, the energy consumed in 2 hours is E=880×2×3600 J
Total unit consumed in 2 hours =880×2×36003.6×106=1.76kWh (1kWh=3.6×106J)
So, the cost of 1.76 kWh is c=1.76×2.5=Rs.4.40

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Powerful Current
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon