(adsbygoogle = window.adsbygoogle || []).push({}); 1. Find the current in, and the potential difference across, each resistor in the circuit shown below:

The circuit is a simple parallel circuit with 2.0 ohms at the first resistor, 10.0 ohms at the second, and 20.0 ohms at the third

The problem also gives you Emf which is 12.0 V and the internal resistance "r" which is 0 ohms

2. Voltage = Current*Resistance

Possibly: Voltage = Emf - Current*Resistance

Req (total resistance) = [(1/Resistance 1) + (1/Resistance 2) + (1/Resistance 3)]-1

3. I would attempt the problem but I've tried so many times and I'm just lost. I was absent the day this question was answered in class.

I thought you were supposed to find the Req first then use the voltage given to find the current in the system, but thats not helping me at all. I don't understand Emf or internal resistance so I'm not sure of its purpose.

I hope this helps. I'm on a laptop so I can't scan any images at all.

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# Homework Help: Electric Circuit Help (Emf and Internal Resistance)

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