Question

4 electic cells of potential difference 1.5 V each have been connected as a battery. What
will be the potential difference of battary?
(1) 1.5 V
(2) 45 v
(3) 5.5 V
(4) 6.0 V
The frequency of sound waves is measured in
unit.
(1) meter (m)
(2) litre (1)
(3) Hertz (Hz)
(4) Calorie (Cal)​

Answer 1

Answer:

hertz second vale ka answer

6.0 first vale ka

hope it helps

Answer 2

Answer:

potential difference=4.5

Explanation:

P. D=1.5+1.5+1.5+1.5=4.5v

frequency of sound waves are measured in Hertz(Hz)

hope it helps you