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When a potential difference of 4V is applied across resistance 10 J if energy is converted find charge that flows?
Wiki User
∙ 11y ago
The question may be defective. It seems to describe a one-time event, whereas
the situation is virtually always a steady-state condition. I'll try to answer both
concepts:
-- Answer to what you actually asked:
1 volt of EMF corresponds to 1 joule per coulomb of charge that climbs or falls through it.
Voltage = (charge) x (energy)
Charge = voltage/energy = 4 volts/10 joules = 0.4 coulomb of charge
-- Answer to what I think you intended to ask:
Rate of energy dissipation, called "power" = (voltage) x (rate of flow of charge, called "current")
Current = power/voltage
10 joules per second/4 volts = 10 "watts"/4 volts = 2.5 coulombs per second = 2.5 "Amperes"
Wiki User
∙ 11y ago
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What is difference in resistance and reactance?
Resistance is a concept used for DC. the current through a resistance is in phase with the applied voltage Reactance is used for AC the current through a inductive reactance lags the applied voltage by 90 degrees. the current through capacitive reactance leads the applied voltage by 90 degrees. the net reactance is the difference between inductive and capacitive reactance
What is the difference between resistor and resistance?
Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it. A resistor is a electrical componet with a predetermined electrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohms etc.. depending on how much current you want to pass through a circuit, you would design the circuit with the required resistors
If 110 V ac is applied to the primary what is the output potential difference?
This answer should contain the amount of turns that the primary and secoundary have.
What is the difference between potential energy and potential difference?
The term potential energy is applied to the energy a thing or material has because of its nature or position. Things can have potential energy because they are at an elevated point in a gravimetric field. There are types of mechanical potential energy like that held in a spring. Things or materials can also have potential energy because of their chemical, electromagnetic or nuclear characteristics. The term potential difference is applied to compare two things or substances, or points in a system (like an electrical circuit) that are at different potentials. A roller coaster at the top of the "starting grade" will have a greater potential energy (positional energy owing to gravity) than one at the end of its run. A chemical explosive has a higher chemical potential than the chemical components used to make it.
What causes potential difference?
A potential difference causes an electric current. Think of it like a river : the source of water is the most elevated point of the river, so the water has a lot of gravitational potential energy. The end of the river is the lowest point of it, so the water has very low gravitational potential energy. What happens between these two points? Water flows! This analogy can be applied to electricity; the potential difference is caused, for example, by a battery in an electric circuit.
Does increasing potential difference increase resistance?
Resistance is due to a property specific resistance of material. In no way resistance depends on the voltage applied. This is the case of ordinary conductor. But in case of semi conductor or insulator there may be chances to get a variation of conductance and hence resistance due to potential applied.
What is the ohm?
The Ohm is a unit of measure of resistance to the flow of electricity. The ohm is defined as a resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere.
What is difference in resistance and reactance?
Resistance is a concept used for DC. the current through a resistance is in phase with the applied voltage Reactance is used for AC the current through a inductive reactance lags the applied voltage by 90 degrees. the current through capacitive reactance leads the applied voltage by 90 degrees. the net reactance is the difference between inductive and capacitive reactance
What is the difference between resistor and resistance?
Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it. A resistor is a electrical componet with a predetermined electrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohms etc.. depending on how much current you want to pass through a circuit, you would design the circuit with the required resistors
What is the difference between resistance and resistor?
Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it. A resistor is a electrical componet with a predetermined electrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohms etc.. depending on how much current you want to pass through a circuit, you would design the circuit with the required resistors
What is difference between resistance and reactance while both are measured in ohms?
Resistance is constant no matter the frequency applied. Reactance varies depending on the frequency of the power applied to it.
What happens when an alternating potential difference is applied across a primary coil of a transformer?
burn or burst
How do you create an ohm?
The ohm is defined as a resistance between 2 points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere, the conductor not being the seat of any electromotive force.
What do you nned to make an electric current?
An electrical potential difference (aka. a difference in applied voltage), and a conductor / circuit. Electrons would help too.
If 110 V ac is applied to the primary what is the output potential difference?
This answer should contain the amount of turns that the primary and secoundary have.
What is ohm low?
v=ir Ohm's law states that , in a dc circuit the current is directly proportional to the applied voltage and inversely proportional to the resistance at a constant temperature. It has the formula V=IR where I is the current and R is the resistance.
How do you create current from Voltage?
Electric current is what flows when the voltage is applied across a resistance. Electrons flow from the negative end to the positive end. Strictly, if everything was at the same voltage no current will flow because there is no distinction, positive or negative between the ends. So people often talk more accurately of voltage difference, or potential difference.
