Pulkit Khanna
from
DELHI PUBLIC SCHOOL RUBY PARK KOLKATA, Kolkata
Subject :NSO Class : Class 7
Which of the following is not a source of electric current?
(A)
(B)
(C)
(D)
Ans 1:
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Ans 5:
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Khwahish Sharma
from
Oakfield Public School , Jaipur
Class : Class 7
Answer d is correct because car batteries provide electricity to the cars,so it is a source of electricity and dry cells is a type of battery commonly used for portable electrical devices. It provide energy to many things which we daily use like TV remotes , rc cars , torches etc .
Dinamo is also a source of electricity . But electromagnet does not provide us electricity/ energy .