I found this question in my physics but can't see any answer. Can anybody tell me the right answer?

What is the total power in the above circuit?
Answer:

1. 170 mW
   
2. 1.7 W
   
3. 17 W
   
4. 170 W

 

hi waker,
What do you calculate the total series resistance of the circuit.?
E

 

P = E^2 / R, answer rounding off ?

Regards, Dana.

 

Total power

hi waker,
What do you calculate the total series resistance of the circuit.?
E

Total Power

 

hi waker,
To get the Total Power you have to know the Total Resistance, what would you say the total resistance is of that series circuit.
E

 

I got exactly the same thing you got. Provided you did your calculations right. All you need to do is round off your answer to the nearest (sorry, won't give you the hint). But you should be able to get your answer.

So what'd you get?

 

174mW..

 

I guess the test is over.