What are the meter readings in the circuit?

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The discussion focuses on calculating the meter readings in a circuit based on given voltage and resistance values. The user attempts to find the current through three branches using the formula I = V/R, providing specific calculations for each branch. There is confusion regarding the total equivalent resistance of the circuit, particularly questioning the value of 75 ohms and its relevance. The need for clarification on the formula for finding equivalent resistance in parallel circuits is also highlighted. Accurate understanding of these concepts is essential for correct meter readings in the circuit.
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Homework Statement


http://img372.imageshack.us/img372/8240/1005200803ki4.png
What are the meter readings in the circuit on the top?

Homework Equations


V = IR

The Attempt at a Solution



I = \frac{V}{R}

A_2 = \frac{12}{\frac{20}{75}} = 45A

A_3 = \frac{12}{\frac{30}{75}} = 30A

A_1 = \frac{12}{75} = 0.16A

Are my answers correct?
 
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I don't think your answers are correct. What is 75? Is it supposed to be total equivalence resistance of the circuit? If so, then that means the equivalent resistance of the resistors in parallel is 25 ohms, which is not right. What is the formula to find equivalent resistance of resistors in parallel?
 

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