Find resistor currents using KVL.

Solution:

and are parallel. So the voltage across is equal to . This can be also calculated using KVL in the left hand side loop:

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Now, use Ohm's law to find :

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To find , write KVL around the outer loop:

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Again, use Ohm's law to determine :

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Now, tell me what is the current passing through ?

0.3

good job!

From KCL:

good work i got aleast some concepts

good, very good. let me know if you need any help.

Please help me to solve the current flow through the below circuit.

My Circuit

and are both short circuited. If you check the circuit you can easily see that both terminals are connected to each other for both.

So, you have a circuit with a source and and Ohm's law says:

Let me know if you need more help.

Thank you very much, sir.

Surprisingly, in every guidebook I found the answer 7.5 Amp where there was no explanation behind the answer. But now I know the explanation and also know that correct answer is 5 Amp.

I will post here if I need further help. Thanks again for your help.

You are welcome.

What happens if you reverse the polarity of V2?

good question.

Actually, it will be quite interesting. The voltage across is and therefore, the voltage drop on will be zero. You can also verify this by KVL around the outer loop:

And using the Ohm's law, we conclude that no current passes through . The current of is the same as before because its voltage is not changed.