Thread Starter

tyw

Joined Sep 8, 2020
2
4D379D64-67C3-444B-AA5D-3BE0693D3858.pngFor Question 2.1, is the power 500W or 100W ? Do we need to apply the passive sign convention rule for power in whatever cases? Also, i’ve Learnt that we can check answers by balancing power in a circuit. But the power in this kind of circuits don’t balance out, but it is still valid. So when can we use “balancing power” technique to check for our answers? And why can’t the power balances in this case?

Please send help and explanation >.<

Thanks a lot! Have a great day!
 
Last edited:

Thread Starter

tyw

Joined Sep 8, 2020
2
View attachment 216663For Question 2.1, is the power 500W or 100W ? Do we need to apply the passive sign convention rule for power in whatever cases? Also, i’ve Learnt that we can check answers by balancing power in a circuit. But the power in this kind of circuits don’t balance out, but it is still valid. So when can we use “balancing power” technique to check for our answers?
 
Last edited:

Irving

Joined Jan 30, 2016
1,017
You need to apply KVL to the circuit. In 2.1 walk round the circuit calculating the voltage, paying careful attention to the signs... what is the residual PD and its direction?
 
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