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How much current will flow in a circuit with a 12 VDC source connected to a 1K-ohm load?
Wiki User
∙ 12y ago
I = E/R = 12/1,000 = 0.012 ampere = 12 milliamperes.
Wiki User
∙ 12y ago
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How do you calculate voltage current resistance and power?
Use Ohm's law: V = IR (V=voltage, I=current, R=resistance). Example: 3mA flows thru a 1kOhm resistor. V = (0.003 * 1000) = 3V.
Is there any similarity between the two graphs plotted between voltage and current one is 1kohm resistance and another is 2.2kohm resistance?
Of course both are lines but different slopes or gradients.
How do you calculate the voltage across a component if you know its resistance and the current?
Use Ohm's law: V = IR (V=voltage, I=current, R=resistance). Example: 3mA flows thru a 1kOhm resistor. V = (0.003 * 1000) = 3V.
What happens when you connect 230V ac supply directly to a diode with the help of resistor of the order kilo ohms?
When you connect 230V ac supply directly to a diode with the help of resistor of the order kilo ohms, the diode will conduct on alternate half cycles. Forward bias current will be 230ma for 1KOhm, or 23ma for 10KOhm. Power across the resitor will be 25W for 1KOhm, or 2.5W for 10KOhm. Bottom line - the resistor will get very hot - and if not rated correctly, will be destroyed.
How do you find diode IN5408 is usuable?
You need an ohmmeter or multimeter (set in resistance measurement mode). Choose the 1kOhm range. Connect the meter's wires (red & black) each to the diode's terminals, then switch the terminals. In one case you should see a meter reading that is substantially lower than the other. If that is not the case (both read high or both read low), the diode is probably faulty.
How many ohm is a mega ohm?
1 megohm is 0.1 gigaohm. 1 gigaohm is 1000 megaohm. 1 megohm = 1,000,000 ohms = 106 ohms. 1 gigaohm = 1,000,000,000 ohms =109 ohms.
How do you reduce 48 volts dc to 12 volts dc with resistors?
Yes. You can use a voltage divider. Say, for instance, one 1KOhm resistor in series with a 3KOhm resistor. Connect the 3k resistor to the 48 volts and connect the 1k resistor to ground. The 1k resistor will have 12 volts acress it. These resistors need to be at least 1 watt each as they are going to dissipate 0.576 watts and get warm. Now, if you attempt to pull power from the 1k resistor, note that regulation will be poor because the impedance of the load will go in parallel with the 1k resistor and change its value.
A resistor is marked with the following color bands brown black red and gold What is the resistance of this resistor?
1000 ohms = 1Kohm; silver is the tolerance band of the resistor. Silver signifies plus or minus 10%. The fourth band is always the tolerance band. If there is no tolerance band, the tolerance is plus or minus 20%. A gold band would signify plus or minus 5%.
How do i charge a schoche 500 capacitor?
Found this online, Credit to: Sonic Electronix Learning CenterStep 1) Remove the fuse for your audio system that connects it to your battery. This fuse is often in-line with the power wire of the amplifier that your capacitor is going to be connected too.Step 2) Wire up your capacitor by following all the instructions in the installation manual. Make sure the power, ground and if applicable the remote turn on wire of the capacitor is connected.Step 3) To begin charging the capacitor you need either a test light or a resistor. Often times these are included with the purchase of a capacitor but can be purchased separately if necessary.A) Using a Test Light: A test light is the simplest way to charge a capacitor. All you need to do is take the power and ground of the test light and stick them in-line where your fuse used to be. You can use alligator clips to simplify this process. Hold the test light in place of the fuse until the light bulb turns off meaning the voltage went from 12V to 0V and the capacitor is charged.B) Using a Resistor: You will need a 1 watt, 30 - 1,000 Ohm (1kohm) resistor for charging your capacitor unless otherwise specified (you capacitor may have a resistor included). Try to use a higher impedance resistor so that the capacitor is charged slowly. This will prevent the capacitor from charging too fast and sustaining damage. Also, a lower wattage resistor will heat up very quickly and could crack or explode so make sure NEVER to hold a resistor with your bare hands. Put the resistor in line with your fuse holder, as though it were the fuse. Place the voltmeter positive node on the positive terminals of the capacitor and the negative node on the ground terminal of the capacitor and set the meter to Volts DC. Once the volt meter reads 11 or 12 volts you can remove the voltmeter and replace the resistor with the power fuse. The fuse may spark when you reinstall it, this is normal and should end quickly.
