Login
Login
Sign up
Start
Mathmania
Teacher tutorials
TOP
Subjects
Bridge Course
Testworks
Subject updates
Ya+
News
Send feedback
See more
Contacts
About Us
Terms and Conditions
Privacy Policy
PDF chapter test
TRY NOW
Subjects
Science State Board
Class 7
Electricity
Textbook questions
17.
Long answer III
Exercise condition:
4
m.
Explain the construction and working of a dry cell.
a.
Electrical energy is transformed to
heat
mechanical
when an electric current flows across a wire.
b
. The top of the zinc jar is sealed with
lid
pitch or shellac
.
a.
Dry cell is made of
zinc vessel
copper vessel
.
b.
The function of zinc is to keep the paste
moist
dry
.
Login
or
Fast registration
Previous exercise
Exit to the topic
Next exercise
Send feedback
Did you find an error?
Send it to us!