The internal resistances of two cells shown are 0.10 and 0.30. If R=0.20, the potential difference across the cell
27, 0.10
27, 0.30

(a)B will be zero
(b)A will be zero
(c)A and B will be 2V
d)4 will be > 21 and B will be <2V

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j