Use an online calculator to simplify the Ohms law calculations. Ohms law states that V=IR, where "V" is voltage, "I" is current and "R" is resistance. If you can remember that Ohms law is a "Very Important Rule," you have remembered V, I and R in the correct order. Warning Alwa...
The watts equation for an electrical circuit takes into account the voltage across the circuit V, measured in volts, and the current I, measured in amps, passing through it. In mechanics, the definition of power is the rate of doing work W. It's defined as W...
If you want to learn more about electricity besides just how to plug into a wall socket, understanding what volts and watts measure and how they’re interconnected is essential. This beginner’s guide tells you everything you need to know about watts and volts, how they relate to your elect...
First of all, you need to choose the resistance value. To do that you useOhm’s law. One common example is tofind the resistor value you need for an LED. Next, you need to consider the power that the resistor needs to dissipate. Power dissipation in a resistor can be calculated with ...
Coulomb's law made it possible to calculate the electrostatic force between any two charged objects, but it didn't reveal the fundamental nature of those charges. What was the source of the positive and negative charges? As we'll see in the next section, scientists were able to answer tha...
section3 ohms law since the value of r can range from zero to infinity, it is important that we consider the two extreme possible values of r. an element with r = 0 is called a short circuit, as shown in fig.1-11 (a). for a short circuit u = ir = 0 (1-1...
The wire offers resistance to the flow of the current. The amount of resistance depends on the material, diameter and length of the wire. The resistance increases as the diameter of the wire decreases. Resistance is in units of ohms (Ω). Ohm's Law relates voltage, current and resistance:...
The resistance of a platinum wire at 30 degrees is 15 ohms. Find the resistance of 45 degrees. How to calculate frequency of a pendulum How to find critical angle from refractive index Does amplitude change with distance? How to convert millimeters to meters using a formula ...
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1. The number of channels. Generally you want to devote one channel to each speaker. You can daisy-chain them, however, you then have to do some more mathematical equations. 2. The wattage on each channel. The amp will tell you how many watts it supplies on each channel. Look at your...