# 3 simple circuits

1. Jul 30, 2008

### carrollitis

A 1.5e-6 F capacitor is connected as in fig. 31-10 to an AC generator with Em=30 V. What is the amplitude of the resulting alternating current if the frequency of the emf is (a) 1kHz and (b) 8kHz?

I have no idea where to begin. I don't even know what they are asking for in this problem.

2. Jul 30, 2008

### NoTime

Does $$\frac{1} {2 \pi f c}$$ help?

3. Jul 30, 2008

### carrollitis

If you can show me how to do the entire problem that would be great.

4. Jul 30, 2008

### NoTime

PF guidelines are that you need to show your attempt at a solution.
Also you should have posted it in the homework section.

5. Jul 30, 2008

### carrollitis

How do I do that?

6. Jul 31, 2008

### ranger

The homework section is located here:
https://www.physicsforums.com/forumdisplay.php?f=152

Tell us about the ac resistance of a capacitor and how frequency effects, if anything at all.

7. Jul 31, 2008

### zeitghost

Does this post from NoTime mean nothing at all to you?

It's a very big hint...