Category Archives: Multimeter

i have a 96 mustang gt that keeps missfiring and backfires when it gets warm.?

By Matt | Published: May 13, 2012
i have a 96 mustang gt that keeps missfiring and backfires when it gets warm.? I have checked the car with a code scanner and a multimeter to find what sensors may be bad so far i have o2 sensors that are not being “seen” or read by the computer and the maf sensor even when [...]
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Why do voltmeters have high resistance?

By Matt | Published: May 12, 2012
Why do voltmeters have high resistance? I read a few websites to answer my question, but I still don’t quite understand. Why is it important that as little current as possible passes through the voltmeter? Afterall, The voltmeter is measuring the potential difference (volts), not the current difference, isn’t it? :[ I’m really confused. Please help!
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aluminum air battery help?

By Matt | Published: May 11, 2012
aluminum air battery help? I made an experiment where i put a solution of salt water and put aluminum foil at the bottom of a beaker and connect it to an alligator clip then i put paper towel at the top then i put steel wool and connect the steel wool to another alligator clip … [...]
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How do I use a multimeter?

By Matt | Published: May 2, 2012
How do I use a multimeter? I am finding the citrus fruit that can produce the most electricity for my science project! So I used a lemon, lime, orange, grapefruit, and an apple. I got the most highest voltage from the apple, but I’m not sure if I’m using it correctly. What number should the white line/dial [...]
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Investigating the resistance of a wire?

By Matt | Published: April 30, 2012
Investigating the resistance of a wire? I’ve done an experiment investigating the resistance of a wire. I used a battery, ammeter, voltmeter, crocodile clips and an aluminum wire. I have to explain significant limitations of this experiment and how improvements can be made to the measurements. For one of these limitations I have to discuss the [...]
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What is the Current at the ammeter?

By Matt | Published: April 28, 2012
What is the Current at the ammeter? What is the current at the ammeter, i got 11.2 but not completely sure, weird question https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/398922_10150694968835793_625100792_9552898_1978467516_n.jpg
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My Multimeter will not measure current.?

By Matt | Published: April 20, 2012
My multimeter will not measure current.? I recently got a multimeter (Mastech M300 to be exact). However, it will not measure current. I think that I may have blown a fuse in the meter, but all of the other functions still work besides the amps. Would this still happen if I blew a fuse? Any help [...]
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In a series circuit, you have 3 bulbs and a batteri, you put your voltmeter "around" 1st bulb it"s 2v?

By Matt | Published: April 19, 2012
In a series circuit, you have 3 bulbs and a batteri, you put your voltmeter "around" 1st bulb it"s 2v? You put around 2nd bulbe , it says 2v and same for thr third one . What would be the reading on the voltmeter around the batteri?
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An ammeter measures the …?… Passing throught a component, so it is alwayy put in…?..with the component.?

By Matt | Published: April 17, 2012
An ammeter measures the …?… Passing throught a component, so it is alwayy put in…?..with the component.? I need to fill in the 2 blacks! But i don t understand.
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continutiy test on capacitor?

By Matt | Published: April 4, 2012
continutiy test on capacitor? is this true, or backwards? Check continuity of the capacitor. Set the multimeter to the continuity check setting. Touch the black lead to the ground side of the capacitor and the red lead to the other side. If continuity exists (you’ll hear a long beep), the capacitor is short-circuited and should be discarded. Read [...]
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