Question

What is the ratio of potential energy to total energy o electron?

Answer 1

@hartnn

Answer 2

@akash123 @ganeshie8 @UnkleRhaukus @lgbasallote

Answer 3

total energy as in ; mass energy?

Answer 4

a) -2
b) 2
c) 1
d) -1

@UnkleRhaukus can't say exactly

Answer 5

well i dont think negative energy makes much sense in this question

Answer 6

Yes, since total energy and potential energy both are \(-ve\) and their ratio will be positive... (for electron)

Answer 7

how is either negative/?

Answer 8

well since :

2 potential energy = total energy

Answer 9

should the answer be 2 : 1 ? Well @UnkleRhaukus

In the case of electron, both are negative

Answer 10

really?

Answer 11

yes...

Answer 12

i dont know what you mean

Answer 13

total energy = -ve

potential energy = - ve

and hence : their ratio will be +ve

Answer 14

@hartnn and @lgbasallote any suggestions/ideas ?

Answer 15

I assume you're basing this on an electron orbiting a nucleus (which you need to say, otherwise this doesn't make any sense), in which case the virial theorem states that on the average,

\[2T = -U \]
where T is the kinetic energy and U is the potential energy. The total energy is thus
\[ E = T + U = -\frac{1}{2}U + U = \frac{1}{2}U \]

Answer 16

OK very right .. so the answer is 2 ?

Answer 17

The ratio of total energy to potential energy is 1/2, but the ration of potential energy to total energy is 2.

Answer 18

ratio*

Answer 19

lol I changed the question wrong

Answer 20

thanks @Jemurray3