How many resistors do I need for 88 Ohm?
Answer. Therefore, 4 resistors of 88Ω ( in parallel) are required to carry 10 A on a 220 V line.
How many 132 Ω resistors in parallel are required to carry 5 A on a 220 V line?
Answer. Number of Resistors required are 3.
How is current related to resistance?
Resistance and resistivity Experimentally, it was found that current is proportional to voltage for conductors. The proportionality constant is the resistance in the circuit. This relationship is called Ohm’s law: V = IR. Resistance is measured in ohms ( W): an ohm is equal to 1 volt/1 ampere.
What is resistance and its types?
Resistance is a measure of the opposition to current flow in an electrical circuit also known as ohmic resistance or electrical resistance. Ohms are measured as resistance, symbolised by the Greek letter omega (Ω). There may be two types of resistors in general. Variable Resistors and Set Resistors.
What is the concept of resistance?
Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). All materials resist current flow to some degree.
Are resistance and current directly proportional?
In the first version of the formula, I = V/R, Ohm’s Law tells us that the electrical current in a circuit can be calculated by dividing the voltage by the resistance. In other words, the current is directly proportional to the voltage and inversely proportional to the resistance.
When two resistance of 3 ohm and 6 ohm are connected in parallel then the equivalent resistance is?
Calculate the equivalent resistance when two resistances of 3 ohms and 6 ohms are connected in parallel. Thus, the equivalent resistance is 2 ohms.
What is the total resistance if three resistance of 3 ohm 9 ohm and 5 ohm are connected in series?
Therefore, their equivalent resistance will be given by This equivalent resistor of resistance 2Ohm is connected to a 2Ohm resistor in series. Therefore, the equivalent resistance of the circuit = 2 Ohm + 2Ohm = 4 Ohm Hence the total resistance of the circuit is 4Ohm.
How many 176 ohm resistors do I need?
How many 396 Ω resistors in parallel are required to carry 5 A on a 220 V line?
Hence, four resistors are required.
What is a good sentence for resistance?
Examples of resistance in a Sentence Noun They have shown a stubborn resistance to change. The troops met heavy resistance as they approached the city. The paint shows good weather resistance.
How do you solve for resistance to change?
How to Overcome Resistance and Effectively Implement Change
- Overcome opposition. Regardless of how well companies manage a change, there is always going to be resistance.
- Effectively engage employees. Listen, listen, listen.
- Implement change in several stages.
- Communicate change effectively.
How does resistivity change with temperature?
The general rule is resistivity increases with increasing temperature in conductors and decreases with increasing temperature in insulators. As temperature rises, the number of phonons increases and with it the likelihood that the electrons and phonons will collide. Thus when temperature goes up, resistance goes up.
How can 3 resistors of Resistance 2 ohm?
There are three resistors of resistances 2 Ω, 3 Ω, and 6 Ω respectively. This equivalent resistor of resistance 2 Ω is connected to a 2 Ω resistor in series. Therefore, the equivalent resistance of the circuit = 2 Ω + 2 Ω = 4 Ω Hence the total resistance of the circuit is 4 Ω.
How can three resistors of resistance?
Thus, we can obtain a total resistance of 4Ω by connecting parallel combination of 3Ω and 6Ω resistors in series with 2Ω resistor. (b) In order to obtain a total resistance of 1Ω from three resistors of 2Ω, 3Ω and 6Q, all the three resistors should be connected in parallel.
What are the factors of resistance?
There are 4 different factors which affect resistance:
- The type of material of which the resistor is made.
- The length of the resistor.
- The thickness of the resistor.
- The temperature of the conductor.
What does not affect a material’s resistance?
Length and area affect resistance as well as type of material expressed with . Temperature does not affect resistance.
What are examples of resistance exercises?
Examples of resistance training
- Free weights – classic strength training tools such as dumbbells, barbells and kettlebells.
- Medicine balls or sand bags – weighted balls or bags.
- Weight machines – devices that have adjustable seats with handles attached either to weights or hydraulics.
How will you connect three resistors of 2 ohm?
The 2 ohm and 3 ohm resistors will be connected in series. This will give a resultant resistance of 5 ohm. Then this arrangement will be connected with the 5 ohm resistor in parallel. This will give a effective resistance of 2.5 ohm.
How important is the resistance in a circuit?
Resistance is another important property that can be measured in electrical systems. Resistance is measured in units called ohms. Materials with low resistance let electricity flow easily. Materials with higher resistance require more voltage (EMF) to make the electricity flow.
What is a the highest resistance?
Answer Expert Verified (a) The highest resistance is when the resistances are connected in series. Total resistance in series = R₁ + R₂ + R₃ + R₄ Total resistance in series = 4 + 8 + 12 + 24. Total resistance in series = 48 Ω Hence, the highest resistance is 48 Ω.