scale divisions which can be read to half a division. Determine resolution of meter in volt. [0.25 V] (c) A Wheatstone bridge is balanced with all the four resistances equal to 1kΩ each. The bridge supply voltage is 100V. Now one of the resistances is changed to 1010Ω. The output voltage is measured by a voltmeter of infinite resistance. Calculate the bridge sensitivity. [25V or 0.025 V/Ω] (d)Each of the following numbers has a uncertainty of one in the last figure. Determine the number of significant
Premium Normal distribution Standard deviation Measurement
Li Practical Investigation Resistance in Wire Aim: To investigate if the length of wire affects its resistance and find out how the resistance changes when the length of wire increases. Hypothesis: My prediction is that as the length of wire increases‚ the resistance will also increase. This is because current is the flow of electrons in a circuit and voltage makes the electrons flow through the circuit. The electrons have to collide with the atoms in the wire‚ which makes the electrons harder
Premium Ohm's law Orders of magnitude Wire
Resistance in a Conductor: The electrical resistance of an electrical conductor is the opposition to the passage of an electric current through that conductor. Electrical resistance shares some conceptual parallels with the mechanical notion of friction. The SI unit of electrical resistance is the ohm (Ω).An object of uniform cross section has a resistance proportional to its resistivity and length and inversely proportional to its cross-sectional area. All materials show some resistance‚ except
Premium Electric current Superconductivity Electrical conductivity
quality wire is one step to achieving a satisfactory vaping experience. If you are an advanced vaper and have been building coils for some time‚ then you can understand what I mean. Getting an elastic wire that is easy to bend and build and at the same time a great conductor of heat‚ then you have got yourself a good one. One thing we can all agree on is that Nichrome is a great coil material‚ especially‚ for sub-ohm vaping. And‚ one of the best Nichrome wires is the Anarchist Competitive Wire 15ft
Premium Internal combustion engine Energy Fossil fuel
Batteries‚ Resistance and Current “Battery-Resistor”: Check “show battery” and “show cores”‚ watch what happens‚ adjust some variables 1. Why do electrons (blue dots) move? Draw a diagram of the battery‚ label the flow of electrons. The flow of current (+) is opposite; draw this and note if toward or away from + terminal of the battery. The blue dots indicating the electrons move because there is a voltage across the battery in which the electrons flow away from the positive terminal
Premium Resistor Electric current Electrical resistance
Peaceful resistance to laws is essential in the progress of a free society and promotes responsibility among citizens to uphold their rights and beliefs. In many instances where desired civil‚ reproductive‚ or other rights are in question‚ the legal route of seeking change in our laws has been unproductive or seemingly impossible. This frustration is beyond an American dilemma or a 19th century issue‚ but rather spans many forms of government over time. It has been and will always be the duty of
Premium Civil disobedience Nonviolent resistance Nonviolence
Investigation: how the resistance in a circuit varies with the length‚ thickness and type of wire Introduction A current is a flow of negative electrons around a circuit or electrical pathway. This is measured in how many electrons per second or the charge they are carrying go round the circuit (amps or amperes) Voltage or Potential Difference measures how much energy individual electrons have to use up as they go around a circuit. (Volts) Components in a circuit have a Resistance value which will
Premium
disobedience has been occurring all throughout the history of this country. Peaceful resistance to laws is a positive way to impact a free society. It is called a peaceful resistance when it is non-violent and there is no blood shed. People such as Rosa Parks peacefully resisted against unfair laws. As it says in the article‚"Parks was arrested for her act of civil disobedience and convicted of violating the Jim Crow laws that enforced racial segregation in the South until 1965. Her arrest and subsequent
Premium African American Rosa Parks Montgomery Bus Boycott
WHICH VARIABLES AFFECT RESISTANCE‚ AND WHICH ONE HAS THE GREATEST EFFECT. BACKGROUND INFORMATION: Resistance is the force that opposes the flow of electrons in a circuit. The equation for resistance is Ω=V/A. (Ohms equals Voltage divided by amps). Resistivity is a measure of how strongly a material opposes the flow of electrical current‚ There are four main factors that affect resistance: Length – this is because the electrons would bump into more atoms‚ the longer the wire which is like using
Premium Electric current Alternating current Volt
Problem Does temperature affect the resistivity of different sized copper wires? Hypothesis I think that the resistivity will increase with higher temperatures because with higher temperature‚ resistivity is higher due to the fact the atomic lattice structure increases. Background Electrical resistivity is the measurement of how a material opposes the flow of an electrical current. On the other hand‚ electrical conductivity () is the inverse of resistivity. It is the measurement
Premium Electrical conductivity Copper Resistivity