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Relationship between voltage, resistance and current

2022-06-23 17:00Physics
Summary: What is the relationship among resistance, voltage and currentVoltage = current × Resistance. Using Ohm's Law: voltage = current × Resistance. At AC, voltage = current × Impedance. Here, the vol
What is the relationship among resistance, voltage and current
Voltage = current × Resistance. Using Ohm's Law: voltage = current × Resistance. At AC, voltage = current × Impedance. Here, the voltage, current and impedance have phases. The complex number in mathematics is widely used in Electrotechnics. It is convenient to use the complex number to calculate voltage, current and impedanceWhat is the relationship between voltage, resistance and current
It reflects that the current in the conductor is inversely proportional to the resistance of the conductor when the voltage is constant (I ∝ I - current (a) U - voltage (V) r - resistance (EU). Several explanations of Ohm's Law: ① the three quantities of current, voltage and resistance in Ohm's law are for the same conductor. ② For a section of circuit, as long asRelationship between resistance current and voltage
It doesn't mean that the greater the resistance, the greater the voltage. According to Ohm's law, we can know that i=u/r here the resistance is the inherent property of the object. It is exactly what it is. Of course, the influence of other external conditions such as temperature is not considered here, that is, the size of the resistance does not change with the change of voltage or currentWhat is the relationship between current, resistance and voltage
Their relationship is expressed by the formula: u=i*r; The current is proportional to the voltage and inversely proportional to the resistance. When the voltage is constant, the resistance increases and the current decreases, and the resistance decreases and the current increases. When the resistance is constant, the current increases as the voltage increases, and the current decreases as the voltage decreases; When the current is constantRelationship between current, voltage and resistance
According to Ohm's law, we can understand the relationship among current, voltage and resistance. Current = voltage / resistance, that is: i=u/r for the motor mentioned below, we must first understand the motor. Like other electrical appliances, motors have the data of model, power, rated current, rated voltage, grade, revolution, etc. TheseOn the relationship between resistance, current and voltage
The voltage at both ends of the parallel resistance is equal u1:u2=1:1 i1:i2 = 1/3: 1/4=4:3
Relationship and difference of current, voltage and resistance
When the voltage is constant, the current in the conductor is inversely proportional to the resistance of the conductor. The current is the directional movement of the charge. The electromotive force of the power supply forms the voltage to generate the electric field force. Under the action of the electric field force, the directional movement of the charge in the electric field generates the current. The blocking effect of the resistive material on the current is that the resistive voltage of the material is to promote the charge orientationWhat is the relationship between resistance voltage and current
Ohm published a paper in April 1826, rewriting Ohm's law as: x=ksa/ls is the cross-sectional area of the conductor, K is the conductivity, a is the potential difference between the two ends of the conductor, l is the length of the conductor, and X is the current intensity passing through L. If resistance l&39 is used= L/ks is substituted into the above formulaRelationship between voltage, current and resistance
2. When studying the relationship between current and resistance, why should the constant sliding rheostat keep the voltage at both ends of the fixed value resistor unchanged? Will the replacement of the fixed value resistor not affect the voltage at both ends? When you ask, my understanding is that the sliding rheostat is always in a special state, that is, the contact is at the leftmost endWhat is the calculation formula of voltage and current resistance
Series circuit ① current: i=i1=i2 ② voltage: u=u1+u2 ③ resistance: r=r1+r2 parallel circuit ① current: i=i1+i2 ② voltage: u=u1=u2 ③ resistance: the reciprocal of the total resistance is equal to the reciprocal sum of each parallel resistance. If n resistors with the same resistance value are connected in parallel
Relationship between voltage, resistance and current

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