All Questions
Tagged with electric-circuits work
33
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Energy stored in a capacitor vs Work that the battery does [duplicate]
Say we have a battery at a fixed voltage of $V$ charging a capacitor with capacitance $C$.
When the capacitor is fully charged, the energy stored in it will be $\frac{1}{2}QV$, where $V$ is the final ...
- 3,075
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2
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On work by a electric field in a electric circuit
If the electric circuit is complete, then one can say that the net average displacement of the electrons is $0$. Then consequently the work done by the electric field is also $0$.
So how is energy ...
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1
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How does the battery do work on the electron although the speed of electrons is constant
In a simple circuit how does the battery do work on the electrons of the wire although their speed is constant .
Imagine I want to take a body which has 5 Newtons weight from the ground to 10 meters ...
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2
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3
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Electric potential in circuits
From what I understand from my notes, an e.m.f or electromotive force provided by a battery is the electrical energy per unit charge converted from other forms of energy required to drive a unit ...
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Joule's heating effect
Can we derive joule heating effect or heating of current using energy conservation for electrons when current is varying with time ?Like using concept of drift velocity,potential diffrence across ...
user233089
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2
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326
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Work done by battery in moving charge $Q$ in circuit
why work done by a battery in circuit is potential diffrence across plates times charge flown through body.
W=Qε(ε is emf of battery)
although there are heat and other loses ? and another that my ...
user233089
0
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1
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368
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Work done in moving a charge in circuit?
Why is the work done in moving a charge from one point to another in a circuit through any path the same even though heat and other losses are there?
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Work done by battery?
Why the work done by a battery is Q*V where V is emf of battery and Q is charge that is made to flow in circuit?please explain detail?
explain and write the formulas
- 65
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How do electrons gain energy in a cell?
When electrons reach the positive terminal, how does the cell do work on them?
I’ve read in a book that states voltage is literally the push that the cell exerts on electrons, which thus does work on ...
- 1,821
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How do voltmeters measure work done over a component?
In my physics class, we were shown the picture below to measure the current and potential difference through a component. We were told that the resistance of the ammeter is as low as possible, and the ...
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Work done by electric field in a wire
Work done by electric field in moving a unit charge is the potential drop. In wires voltage (potential drop) is given by ohms law. Can somebody explain to me why work done by electric field can not be ...
- 405
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When talking about potential difference in a circuit, whose work done are we talking about?
I'm asking this because it seems to me that when we talk about PD around a charge (i.e. potential difference between infinity and a point), we're talking about the work done per unit charge by an ...
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Work done on a battery
Consider a battery of EMF $E $ and label its positive terminal $P $ and Negative terminal $N $.
Consider current flowing through the battery from $N $ to $P $. Then work is done by the battery. This ...
- 253
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4
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Work done by magnetic field on current carrying conductor
Suppose a wire of length L carrying a current I is kept in a uniform magnetic field B perpendicular to the current. The force on the wire will be IBL and work done by magnetic force when wire moves a ...
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What does electric potential mean in a circuit?
As we know that electric potential at a point is defined as a work done by me to carry unit charge from infinity to that point. How can I use this definition in an electric circuit that contains a ...
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