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Time constant of an RC circuit increases if the value of the resistance is?
Wiki User
∙ 14y ago
Answer : increase
The time required to charge a capacitor to 63 percent (actually 63.2 percent) of full charge or to discharge it to 37 percent (actually 36.8 percent) of its initial voltage is known as the TIME CONSTANT (TC) of the circuit.
Figure 3-11. - RC time constant. The value of the time constant in seconds is equal to the product of the circuit resistance in ohms and the circuit capacitance in farads. The value of one time constant is expressed mathematically as t = RC.
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∙ 14y ago
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Why does power decrease when resistance increases?
First, this statement stands as long as voltage is constant. If you held the current constant then power would increase as resistance increases.V=IR. For a fixed voltage if you increase the resistance (R) then the current (I) will decrease - following the formula.Power = VI so as the resistance increases the value of VI (power) decreases as V is constant and I gets smaller.Therefore the power is decreasing as the resistance increases (when voltage is held constant).Hope this helps.
What happens to the voltage if the current increases?
Yes, if the resistance remains constant. Power is voltage times current, and current is voltage divided by resistance, so power is voltage squared divided by resistance. In essence, the power increases as the square of the voltage.
The value of resistance of an short circuit?
The value of resistance when there is a short circuit varies depending on the nature of the fault, but it could be fractionally above zero or higher.
The time constant of a circuit that contains inductance and resistance follows what type of curve.?
1.cosine 2.exponential 3.min-max value 4.sine
If the value of resistance increased then?
If the resistance is increased the current, which is inversely proportional, decreases and, the voltage drop increases.
Time constant of an RC circuit increases if the value of the resistance?
Increased The time constant of an "RC" circuit IS RC. So it's directly proportional to 'R' and also directly proportional to 'C'.
Why does power decrease when resistance increases?
First, this statement stands as long as voltage is constant. If you held the current constant then power would increase as resistance increases.V=IR. For a fixed voltage if you increase the resistance (R) then the current (I) will decrease - following the formula.Power = VI so as the resistance increases the value of VI (power) decreases as V is constant and I gets smaller.Therefore the power is decreasing as the resistance increases (when voltage is held constant).Hope this helps.
What happens to the voltage if the current increases?
Yes, if the resistance remains constant. Power is voltage times current, and current is voltage divided by resistance, so power is voltage squared divided by resistance. In essence, the power increases as the square of the voltage.
What can resistance do?
U didn't clearify resistance in what aspect. If u mean electrical resistance,Resistance is phenomenum which describes the limitation of the flow of electric current in an electrical circuit. According to Ohms law (V=IR),the value of resistance is directly proportional to the value of voltage and inversely proportional to the value of current.That is,as the value of resustance increased,voltage also increases;also if the valur of resistance increases,the current reduces(as in I=V/R)
What is the value of the resistance of an short circuit?
ohms
The value of resistance of an short circuit?
The value of resistance when there is a short circuit varies depending on the nature of the fault, but it could be fractionally above zero or higher.
The time constant of a circuit that contains inductance and resistance follows what type of curve.?
1.cosine 2.exponential 3.min-max value 4.sine
What does the resistance of a circuit mean?
Resistance in a circuit is its ohmic value of the circuit. It is comprised of all of the devices and components that make up the circuit. This also includes the wire that carries the voltage to the load of the circuit.
What happens if the current is constant and voltage increases?
Generally the voltage is constant and current varies as per the load. Load can vary and hence current can vary. You are stating an abnormal situation, where in voltage increases while current remains constant. I am assuming a constant load situation then normally when voltage increases, the current tends to reduce since over all load remains same. If the voltage goes up beyond a limit the insulation fails and may lead to short circuit, equipment failure, shock and fatality
If the value of resistance increased then?
If the resistance is increased the current, which is inversely proportional, decreases and, the voltage drop increases.
What is the effect on current through a circuit of steady resistance when the voltage is doubled?
The current will increase and will flow more. If voltage increases, current must increase.
How do you find resistance in a parallel circuit?
resistance inparallel decrease in value proportionally two resistance can be calculated as R1XR2/SUM OF R1+R2. many values can be calculated as a fraction 1/r+1/r2+1/3 ....and take the total sum reciprocal
