Physics: Post your doubts here!

[Zenchin92]

Hi can i know why question 10 the answer is A. How do u do this type of grpahs questions?

 

[Physicist]

Hi can i know why question 10 the answer is A. How do u do this type of grpahs questions?

go to

A positively charged oil droplet falls in air in a uniform electric field that is vertically upwards. The droplet has a constant terminal speed v0 and the electric field strength is E.

Physics Reference - A-Level 9702, Past Exam Paper Solutions ..

physics-ref.blogspot.com

 

[Zenchin92]

go to

A positively charged oil droplet falls in air in a uniform electric field that is vertically upwards. The droplet has a constant terminal speed v0 and the electric field strength is E.

Physics Reference - A-Level 9702, Past Exam Paper Solutions ..

physics-ref.blogspot.com

Thankss!

 

[mustafa5255]

A small charge q is placed in the electric field of a large charge Q.
Both charges experience a force F.
What is the electric field strength of the charge Q at the position of the charge q?

A) F/(Qq)

B) F/Q

C) FqQ

D) F/q

Answer is D, why isn't it B? :O HELP