0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Can you list three ways you can change the current in a circuit?
Increase, decrease, or remove the load <<>> Change the voltage and the current will also change in direct proportion, Ohms law.
What happen to the current when the voltage increased if the resistance are constant?
If voltage increases when current remains constant then resistance must also increase. Ohm's Law: Voltage = Current times Resistance.
What are the factors that influence the speed of the direct-current shunt motor with increasing load?
.The magnitude of the voltage and current of both the armature and shunt field coil. To decrease the speed when the load is increasing then increase the shunt field current while decreasing the armature voltage or current. To increase the speed while the load is increasing then increase the armature current while decreasing the shunt field current. The decreasing and increasing of these currents and voltages can be done by connecting a variable resistor in series or parallel with each of the armature and/or shunt field coil.
What happens when resistance is varied in a circuit?
A resistor will not change its value, unless the voltage exceeds the designed power capacity of the resistor. As the voltage increases, the current will increase, if the current gets too high it will cause the temperature of the resistor to increase, if the temperature exceeds the power rating of the resistor then the resistance WILL change. If it goes too High in temperature the resistor will open and current will no longer flow. A resistor is used to control current, and indirectly the .voltage depending on the application. Hope This helps. You must use Ohms Law to see the relationship.
Why cant you use a transformer to increase the voltage of a 60V solar panel?
The output of a solar panel is direct current. Transformers need alternating current to operate.
Can you list three ways you can change the current in a circuit?
Increase, decrease, or remove the load <<>> Change the voltage and the current will also change in direct proportion, Ohms law.
What is the effect on the drift velocity of free electrons by decreasing the length and the temperature of wire?
As we know , resistance(R) is directly proportional to length(L) of conductor and resistence(R) is inversely proportional to current (I) and I=nAqv (v is drift velocity) So , if we decrease the length of the conductor , resistance of the conductor will decrease and current(I) will increase and drift velocity of free electrons will increase . And as we know resistance and temperature have direct relation so , by decreasing the temperature resistence will decrease and current will increase . So drift velocity will increase .
Why is alternating current more effective at long distance travel than direct current?
Transformers increase and decrease voltage as needed. PLATO
What is the effect of temperature on volume?
Temperature has direct relation with volume,so therefore an increase in temperature will result in the increase in volume.
What increase and decrease resistance?
Increase in resistance means that when the resistance of the substance increase by application of some external sources like temperature etc. or when the flow of current through the substance gradually decreases then the resistances increases. Vice versa in case for decrease in resistance.Alternative AnswerResistance is determined by the length, cross-sectional area, and resistivity of a conductor. Resistivity is, in turn, affected by temperature -so temperature indirectly affects resistance.These are the only factors that affect resistance. Voltage and current have no direct effect whatsoever on resistance. Current can affect resistance indirectly if it causes the conductor's temperature to increase.For AC circuits, 'skin effect', due to frequency, causes the current to flow towards the surface of a conductor which acts to reduce the effective cross-sectional area of that conductor. So, frequency can also indirectly affect resistance.
Why Things feel hot because?
The sensation of heat is a direct result of an increase in temperature. Temperature is a direct result of the increase in average kinetic energy of molecules.
What is the relationship between two quantities that increase or decrease together?
Direct variation
When two variables increase or decrease together in the same ratio they?
Are in direct proportion
Briefly explain the direct expenses?
Direct expenses increase or decrease based on the rate of production. For example raw material costs increase as more products are made.
What is the meaning of inverse and direct relationship?
An inversely proportional relationship shows that as one variable of an equation increases, the other will decrease. A directly proportional relationship shows that as one variable increases, the other increases as well.
The relationship between two quantities that increase or decrease together is called?
direct variation or positive correlation.
How does the volume of an ideal gas at constant temperature and pressure change as the number of molecules increases?
As you decrease the volume, the pressure will increase proportionally, and if you increase the volume, then the pressure will decrease.
