I'm actually making a motor... for our physics project...
but I've got a problem about it.. and I need answers immediately.. as soon as possible...
The motor moves fast because of the flow of current.. so I need to reduce its flow to lessen its turn...
the motor's shaft moves as fast as the electric fan moves... so I need to lessen it.. what can I use? and please also explain how will it help me.. thanks!!!
2007-11-29 16:45:24 · 15 answers · asked by ~§~ 3 in Science & Mathematics ➔ Physics
a potentiometer is your best bet ,get a dimmer switch from the hardware store,it is actually a variable resistor and has many common uses from the panel light dimmer on a car to the speed control on many ceiling fans(wall mounted control as opposed to pull chain)
2007-11-29 16:53:06 · answer #1 · answered by joe c 6 · 1⤊ 0⤋
Well, the easiest thing to do would be to use a battery with a lower voltage, which would reduce the current (because of the formula I = V/R, a decrease in voltage causes a decrease in current).
Or, you could place a resistor in series with the motor, to increase the resistance of the circuit (I = V/R again, an increase in resistance causes a decrease in current).
2007-11-29 16:51:34 · answer #2 · answered by RavenSierra 3 · 0⤊ 0⤋
Voltage= Current X Resistance
Hence, Current is Voltage/Resistance
so if you increase Resistance Current will Decrease.
2007-11-29 16:49:30 · answer #3 · answered by strange_raga 4 · 1⤊ 0⤋
Stay clear of capacitors and transistors. You simply need to add resistance in series with the motor. A potentiometer will work, it will allow you to vary the resistance (like a dimmer switch) to get the speed you want.
2007-11-29 16:56:39 · answer #4 · answered by Andrew B 2 · 1⤊ 0⤋
I think if you want to change the speed of a motor, you need to use a DC voltage source, not AC. ( That means you need a DC motor to start with) Then as you adjust the voltage, the speed will change.
2007-11-29 16:57:18 · answer #5 · answered by Rich 7 · 1⤊ 0⤋
the quick respond is helpful. yet electric powered currents in forged subject remember, like an prolonged conductive cord, on the entire flows very slowly. case in point, in a copper cord of pass-area 0.5 mm, wearing a modern of 5 Amp, the float p.c.. of the electrons is of the order of a millimeter in accordance to 2nd. despite the fact that, interior the close-vacuum interior a cathode ray tube, the electrons adventure in close-at as quickly as lines at approximately one tenth of the p.c.. of light.
2016-11-13 01:21:09 · answer #6 · answered by ? 4 · 0⤊ 0⤋
Resistance will lower the current. Add a light bulb or series of bulbs. Is your circuit AC or DC and at what Voltage?
2007-11-29 16:49:20 · answer #7 · answered by Kevin U 4 · 1⤊ 0⤋
A resister (or several) will decrease the input voltage. A variable resister (rheostat) will allow you to adjust the speed in real time.
2007-11-29 16:52:27 · answer #8 · answered by poolplayer 6 · 0⤊ 0⤋
Current = Voltage/Resistance
If you add resistors to the circuit (in series), current will decrease.
2007-11-29 16:48:14 · answer #9 · answered by Master Maverick 6 · 1⤊ 0⤋
A rheostat is something you can plug into and then modify the current. Sorta like a dimmer switch. I use one on my soldering iron.
2007-11-29 16:48:42 · answer #10 · answered by CiCi 5 · 1⤊ 0⤋