# What are the meter readings in the circuit?

1. May 10, 2008

### looi76

1. The problem statement, all variables and given/known data
http://img372.imageshack.us/img372/8240/1005200803ki4.png [Broken]
What are the meter readings in the circuit on the top?

2. Relevant equations
$$V = IR$$

3. 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?

Last edited by a moderator: May 3, 2017
2. May 10, 2008

### Defennder

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?