Miley Cyrus

Question about current?

2.In order to measure current through a segment of the circuit, you place an ammeter in that segment. This adds the resistance of the ammeter, RA to the resistance of the segment, RS. For a fixed voltage, the current through the segment is actually:

I(actual) = Voltage/(resistance of ammeter-resistance of segment)

Using RA = 10.0 ,how does this new calculated value compare to your measured value as opposed to the original calculated current? Is this what is scientifically expected? Explain.

As far as the calculation goes, the current measured is .0146 A, while the new calculated actual value is .0142 Amps. I don’t understand why this is scientifically expected, can anyone tell me?

10 points for sure.
I meant add the resistances, I apologize. The values are the same though, it was a typo.

How to test the camshaft sensor with multimeter?

Its a VW golf 2001 2 liter. What is the acceptable resistance for the camshaft sensor? What setting should be used on the multimeter?

Engineering help please, on circuits?

a circuit has a lamp and an ammeter of 0.1 A and R1. along with a voltmeter of 6V. there is an R2 with a 3.5 voltmeter along with another ammeter of 0.35A.

Questions are: 1) what is the battery voltage?
2) what is the total current flowing from the battery
3) what is the total resistance of the circuit
4) what is the resistance of R2
5) what is the voltage across the lamp
6) what is the resistance of R1

Thank You very much!

Help with ammeter readings?

If you put an ammeter anywhere on a cicuit, will the readings change?
I mean will it read the same amount of current anywhere on the ciruit.
I mean will it read the same amount of current anywhere on the ciruit.

Tranny slips under heavy load, then will not go into gear w/o toggling key. Sometimes won\’t shift out of first?

93 accord automatic. Fluid full and not burnt. Signals trouble code 15, both speed sensors check out okay with voltmeter. Tcm is intact internally. Gonna b easy to say tranny bad, but explain key issue. After a slip, I can put it in reverse while driving and it’s like neutral.

ARE THESE SUBWOOFERS OK?

I bought two used 15inch kicker L7 subwoofers, they “look” ok, upon testing them with a digital multimeter at the 2000ohm setting i got a reading of around 4 on the meter for each sub. i heard it should be on the 200ohm setting where as i did it on the 2000ohm setting, does this make any difference?

Why is the current (in amps) the same all the way in a series circuit?

In a series circuit, no matter where you put the ammeter, the reading will be the same. Why? I.e. if we use the hose/ water analogy, where current is how fast the water is flowing, and resistance is like a wall or blockage in the middle of the pipe, won’t the water SLOW down if it reaches a wall? Thus, if you had a circuit with only a cell and a bulb, wouldnt the ammeter reading be larger before the bulb than after the bulb?

a device that can induce alternating voltage using armatures forces to spin in strong magnetic fields is the?

a. generator
b. electric motor
c. voltmeter
d. superconuctor

**am having a little trouble understanding this questions, I have been reading my science book, if some could please help me understand how you get an answer that would be very helpfull to me. Thank you!

Measurement Uncertainty?

how do i work out the uncertainty of the graph ive plotted voltage vs current ?
ive only taken 1 reading for each one.. this was done using a digital multimeter

(Current +) (Current -) (Voltage +)(Voltage -)
0 0 0 0
0.55 -0.55 0.70 -0.70
1.57 -1.57 1.60 -1.60
2.58 -2.58 2.70 -2.70
3.62 -3.62 3.60 -3.60
4.63 -4.63 4.60 -4.60
5.52 -5.52 5.60 -5.60
5.64 -5.64 6.70 -6.70
7.63 -7.63 7.60 -7.60
8.61 -8.61 8.60 -8.60
9.56 -9.56 9.60 -9.60

someone point me to the right direction please!! thanks alot in advance

p.s sorry about the table i know it looks a mess but i cant copy the grid on here it comes out like this

Are the placements of the voltmeters and ammeters correct?

Here’s my make-shift figure:
http://imageftw.com/uploads/20111208/voltammeter.jpg