Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.


junior college 2 | H1 Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Liew Zhen jie

junior college 2 chevron_right H1 Maths chevron_right Singapore

It's a H2 Phys question.

Date Posted: 4 years ago
Views: 578

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Zheng Jie
Zheng Jie's answer
15 answers (Tutor Details)
Emf = e - ir where r is internal resistance. When circuit is closed, there charge carriers need to pass through the extra resistance, leading to energy loss in the battery. Hence minus ir