Tardigrade
Tardigrade - CET NEET JEE Exam App
Exams
Login
Signup
Tardigrade
Question
Physics
A primary cell has an e.rn.f. of 1.5 volt. When short-circuited it gives a current of 3 ampere. The internal resistance of the cell is
Q. A primary cell has an e.rn.f. of
1.5
volt. When short-circuited it gives a current of
3
ampere. The internal resistance of the cell is
220
163
Current Electricity
Report Error
A
4.5 ohm
23%
B
2 ohm
22%
C
0.5 ohm
46%
D
(1/45)ohm
10%
Solution:
r
=
E
/
I
=
1.5/3
=
0.5
o
hm