Category Archives: Multimeter

my car battery charger is charging at 16v is this too much?

By Mel | Published: February 19, 2012
my car battery charger is charging at 16v is this too much? i just got a schumacher xcs15 and i put it to charge my battery and checked the voltage with a multimeter and it reads 16v is this too much,i disconnected a few times to see if it will reset since its automatic but [...]
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Equipotential and electric field lines?

By Mel | Published: February 17, 2012
Equipotential and electric field lines? In lab we had to draw equipotential and electric field lines using a voltmeter on conductive paper in two different ways: a point charge and a line charge set up. We had to calculate the potential difference between equipotential lines using DeltaV=Ed. We were supposed to get similar numbers, which I [...]
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what’s the difference between a 12 amp ammeter and an ammeter whose full scale reading is 12 amps?

By Mel | Published: February 8, 2012
what\’s the difference between a 12 amp ammeter and an ammeter whose full scale reading is 12 amps? My book is treating them like two different things. I would think they are the same, but they’re not.
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where can i sell my multifunction process calibrator?

By Mel | Published: January 28, 2012
where can i sell my multifunction process calibrator? hello i have some old tools that i have been goin through and i have really only this one piece of equipment that i and tryin to sell i was wondering if there was anyone out there that could help . it is a FLUKE 725 MULTIFUNCTION PROCESS CALIBRATOR [...]
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Internal Resistance Problem.. what is R2?

By Mel | Published: January 27, 2012
Internal Resistance Problem.. what is R2? https://homework.ps.uci.edu/webwork_course_files/2012Winter_Physics_3LB_47223/tmp/gif/Phys3LB_Week3-prob2-f33.gif (this is a link to the image of the circuit) Internal resistance problem. Suppose that in Figure 3.3, Vo=7V, R1=250k, R2=425k, and Ri=17M. Initially, the voltmeter is disconnected. EXAMPLES: What is the voltage across R2? [Answer: 4.40740740740741 V.] What is the voltage across R2 with the meter connected? [Answer: 4.03389830508475 V.] QUESTION: If the internal [...]
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How to test for conductivity?

By Mel | Published: January 25, 2012
How to test for conductivity? Okay, we have a science project that involves testing the conductivity of sports drinks. I have a digital multimeter here and i have no idea how to use it. I’m kinda new the voltage, ohms and resistance, but we need to test for the voltage of sports drinks. sooo how do i go [...]
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ELECTRICITY HELP?!?!?!?!?

By Mel | Published: January 16, 2012
ELECTRICITY HELP?!?!?!?!? Need help in 2 electricity questions What happens to the ammeter reading if the variable resistor is a. increased in value b. decreased in value THANKS
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What range do I use my multimeter for settng gains?

By Mel | Published: December 27, 2011
What range do I use my multimeter for settng gains? I do not have access to a oscilloscope so I am using a digital multimeter instead to set my gains the amplifier I have is a JL audio 500/1 on their tutorial site it says to set to 31.6 volts, where where do I dial the [...]
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calculator solar cell???

By Mel | Published: December 18, 2011
calculator solar cell??? i have a 1.5 volt-motor and a 1.5 volt solar cell as my multimeter shows. but how can i make the motor run? i know its still an incomplete circuit but how can i make it complete? should i add one more cell? or some say rechargeable battery, but how?
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I need an idea for a project?

By Mel | Published: December 17, 2011
I need an idea for a project? I’m in Grade 9 and in science we are in Unit 4 and we are doing a project on inventing something. It can be simple and already existing but I don’t want mine to be too simple. I was thinking maybe a jewellery box with a little alarm system [...]
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