A resistor is one of the most commo

A resistor is one of the most common elements of any circuit. Resistors are used:
1. to reduce the value of current in'the circuit;
2. to produce IR voltage drop and in this way to change the value of the voltage.
When current is passing through a resistor its temperature rises high. The higher the value of current the higher is the temperature of a resistor. Each resistor has a maximum temperature to which it may be heated without a trouble. If the temperature rises higher the resistor gets open and opens the circuit.
Resistors are rated in watts. The watt is the rate at which electric en¬ergy is supplied when a current of one ampere is passing at a potential difference of one volt. A resistor is rated as a 1-W resistor if its resistance equals 1,000,000 ohms and its current-carrying capacity equals 1/1,000,000 amp, since P = E x I = IR x I = I2R where P - power is given in watts, R - resistance is given in ohms and I - current is given in amperes.
If a resistor has a resistance of only 2 ohms but its current-carrying capacity equals 2,000 amp, it is rated as a 8,000,000-W resistor.
Some resistors have a constant value - these are fixed resistors, the value of other resistors may be varied - these are variable resistors.

Результаты (английский) 2:

A resistor is one of the most common elements of any circuit. Resistors are used:
1. to reduce the value of current in'the circuit ;
2. Produce the IR voltage to-drop and in the this way to the the change of value of the voltage.
for When current is passing through a resistor its' temperature the high Rises. The higher the value of current the higher is the temperature of a resistor. Each resistor has a maximum temperature to which it may be heated without a trouble. The temperature Rises the If the Higher resistor and the gets the open Opens the the circuit.
Resistors are is rated in watts. The watt is the rate at which electric en¬ergy is supplied when a current of one ampere is passing at a potential difference of one volt. A resistor is rated as a 1-W resistor if its resistance equals 1,000,000 ohms and its current-carrying capacity equals 1 / 1,000,000 amp, since P = E x I = IR x I = I2R where P - power is given in watts, R - resistance is Given in ohms and I of - current is Given in amperes.
the If a resistor has a resistance of only 2 ohms But its' current-Carrying capacity the equals 2,000 amp, IT is is rated as with a 8,000,000-the W resistor.
Some resistors have a constant value - these are fixed resistors, the value of other resistors may be varied - these are variable resistors.

Результаты (английский) 3:

a resistor is one of the most common elements of a circuit. Resistors are used:1. to reduce the value of current in the circuit.2. to produce ir voltage drop and in this way to change the value of the voltage.when current is passing through a resistor its temperature rises high. the higher the value of current, the higher is the temperature of a resistor. each resistor has a maximum temperature to which it may be news without a trouble. if the temperature rises. the resistor gets open and designed the circuit.Resistors are rated in watts. the watt is the rate at which electric en¬ergy is supplied when a current of one ampere is passing at a potential difference of one). a resistor is rated as a 1 - w resistor if its resistance equals 1000000 ohms and its current - carrying capacity equals 1 / 1000000 amp, since p = e x i = x i = ir I2R where p is the power is given in watts, r is resistance is given in ohms and i - current is given in amperes.if a resistor has a resistance of only 2 ohms but its current - carrying capacity equals 2000 amp, it is rated as a resistor eight million).some resistors have a constant value - these are fixed resistors, the value of other resistors may be varied by a variable resistors.