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Why do the current changes?
The amount of current that flows in a circuit is proportional to the voltage and inversely proportional to the resistance, as per Ohms law (I=V/R) where I is current.When resistances (IE loads) are connected in series, the total resistance is the sum of the loads (IE Rtotal = R1 + R2 + R3 ...)When they are connected in parallel, the total resistance is the inverse sum of the reciprocals of each resistance (IE 1/Rtotal = 1/R1 + 1/R2 + 1/R3 ...)Therefore in parallel the total resistance is much lower, and therefore at the same voltage more current will flow.
How do resistors act in series?
In brief, the overall or net resistance changes and the resistors in series and/or parallel can be represented by a single equivalent resistor. If you consider series resistors the equivalent resistance of the series would be: R = R1+R2+ ... +Rx The equivalent resistance of parallel resistors would be: 1/R = 1/R1 + 1/R2 + ... + 1/Rx One rule to always remember when dealing with series and parallel resistors is the voltage across each resistor in parallel will be the same as defined in Kirchhoff Voltage Law and the current across each resistor in series will be the same by Kirchhoff Current Law. More information can be found at this web site. http://physics.bu.edu/py106/notes/Circuits.html
Do additional resistors affect power?
Of course. Additional resistors change total resistance, which changes current, which affects power.
What does magnetoresistance do?
Magnetoresistance is an effect observed in (ferro)magnetic conductors. When applying an external magnetic field to the conductor, the resistance of the conductor changes. The resistance is minimized when the magnetic field is aligned parallel to the conductor, and maximized when the magnetic field is aligned perpendicular to the conductor. This effect was first observed by W. Thomson in 1856, and changes in resistance are usually below 1% at room temperature and higher at lower temperatures <5K For further reading: http://en.wikipedia.org/wiki/Magnetoresistance http://en.wikipedia.org/wiki/Electron_scattering
The relationship between resistance and conductors is?
ALL resistance are conductors. just the magnitude value changes
What is the main function of resistances in fire alarm circuit?
Heat changes the resistance of a circuit. The change is detected by the system, and activates the alarm.
Why do the current changes?
The amount of current that flows in a circuit is proportional to the voltage and inversely proportional to the resistance, as per Ohms law (I=V/R) where I is current.When resistances (IE loads) are connected in series, the total resistance is the sum of the loads (IE Rtotal = R1 + R2 + R3 ...)When they are connected in parallel, the total resistance is the inverse sum of the reciprocals of each resistance (IE 1/Rtotal = 1/R1 + 1/R2 + 1/R3 ...)Therefore in parallel the total resistance is much lower, and therefore at the same voltage more current will flow.
How do resistors act in series?
In brief, the overall or net resistance changes and the resistors in series and/or parallel can be represented by a single equivalent resistor. If you consider series resistors the equivalent resistance of the series would be: R = R1+R2+ ... +Rx The equivalent resistance of parallel resistors would be: 1/R = 1/R1 + 1/R2 + ... + 1/Rx One rule to always remember when dealing with series and parallel resistors is the voltage across each resistor in parallel will be the same as defined in Kirchhoff Voltage Law and the current across each resistor in series will be the same by Kirchhoff Current Law. More information can be found at this web site. http://physics.bu.edu/py106/notes/Circuits.html
Do additional resistors affect power?
Of course. Additional resistors change total resistance, which changes current, which affects power.
How does current change when you add a light bulb?
When you add a light bulb to a circuit, the total resistance of the circuit changes, typically decreasing if the bulb is connected in parallel. In a series circuit, the total resistance increases, causing the overall current to decrease. In contrast, in a parallel circuit, the additional path for current can increase the total current drawn from the power source. The exact effect depends on the configuration of the circuit and the specifications of the light bulb.
There are two light bulbs in a circuit wired in parallel a third light bulb is added again in parallel what is the effect on total resistance of adding the third bulb?
Total resistance decreases:1/R(total) = 1/R1 + 1/R2 + 1/R3Assuming each lightbulb has the same resistance: R1 = R2 = R31/R(total) = 1/R = 1/R + 1/R = 3/RR(total) = R/3Before the bulb was added:1/R(total) = 1/R + 1/R = 2/RR(total) = R/2R/3 < R/2
How is the resistance value for a linear resistance changed?
The resistance value for linear resistance is changed by changing the wavelength of the current or by installing additional resistors in the circuit. This restricts the amount of electricity which flows through the wiring.The resistance value for the linear resistance can be changed through strain over time. It can also be changed by changes in temperatures, such as going from hot to cold.
The resistance of an object to changes in its motion?
The resistance of an object to changes in its motion is known as inertia. Changes in an objects motion include changes in its speed and direction.
What force changes when a sky diver's parachute opens?
The force that changes is air resistance and the force that stay the same is gravity.
Is the measure of the amount of resistance an object has to changes in its state of motion?
Resistance to changes in its state of motion is measured by inertia, which is the tendency of an object to maintain its velocity. The larger the mass of an object, the greater the inertia and resistance to changes in motion.
What will happen if you undo a bulb in a parallel circuit?
The bulb you remove will go out :) Overall current will also be reduced proportional to the resistance of the bulb being removed. Lets say you have two 60 W incandescent bulbs in parallel and they each are drawing 1/2 Amp (60W = 120 Volts x 1/2 Amp). The resistance of each bulb is 240 Ohms (120 Volts / .5 Amps). The parallel resistance is 120 Ohms so 1 Amp is being drawn. When one of the two bulbs is removed the resistance changes from 120 Ohms to 240 Ohms, reducing the current from 1 Amp to 1/2 Amp.
What are factors affecting internal resistances?
Internal resistance in a battery is influenced by several factors, including temperature, state of charge, and the materials used in the battery's construction. Higher temperatures can reduce internal resistance, while lower temperatures may increase it. Additionally, the age and cycle life of the battery, as well as the physical and chemical changes occurring within the electrodes and electrolyte, can also significantly impact internal resistance. Lastly, the design and configuration of the battery, such as electrode surface area and thickness, play a crucial role in determining internal resistance.
