Electric Circuit Problem Help: Understanding Emf, Current, and Terminal Voltage

AI Thread Summary
The discussion centers on understanding the relationship between electromotive force (Emf), current, and terminal voltage in an electric circuit. It highlights that when resistance is added in parallel, the equivalent resistance decreases, leading to an increase in current. This increase in current results in a higher voltage across the load resistor. Terminal voltage, defined as the voltage across the battery in a circuit, decreases as current increases due to the internal resistance of the battery. The key takeaway is that the terminal voltage is affected by the current flowing through the internal resistance of the battery.
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The answer is A and i don't really understand why that is so. I am thinking that since Emf - Ir= Vterminal. The current must go up but i am not sure exactly why is that happening. I've read through my handbook but can't seem to find anything on this type of problem.
 
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see when the resistance is added in parallel to the 4{}| the the equvalent resistance goes down due to which the current increases and voltage across the 5{} is given by
I*R,THEREFORE THE VOLTAGE ACROSS IT ALSO INCREASES.
 
terminal voltage is the voltage across the battery when it is connected in a circuit,as the current increases the terminal voltage which is equal to=E-IR decreases,here the R stands for internal resistance of the battery
 

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