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Is the potential difference between the terminals of a cell in a circuit fixed or does it depend on the components that are connected in the circuit?
All cells have internal resistance. The value is very small when the cell is fresh. The value increases slightly and slowly as the cell discharges.
So the potential difference across the cell will not noticeably change when a load is initially connected. As the cell becomes more discharged, the drop in potential difference upon connecting a load will increase.
The point at which the cell is no longer any use depends on the minimum voltage which the load requires, and the current required by it.
What else can I help you with?
What are two ways electric circuits can be arranged?
Electric circuits with 2 terminals can be arranged in "series" or in "parallel". This applies to all 2-terminal circuits - including fundamental components such as resistors, capacitors, or inductors. The term "series" means that an electrical path in an existing circuit is broken and the circuit is connected to the 2 terminals of the break. The term "parallel" means that the electric circuit is connected between 2 existing terminals or nodes of the existing circuit.
What will happen if two terminals of capacitor are shorted?
When the terminals of a capacitor are connected together, the capacitor will discharge, returning to a zero potential state. Capacitors resist voltage change, meaning that if the capacitor is in a circuit that has zero voltage potential, the capacitor will eventually achieve zero potential. If the capacitor is in a circuit that has a 5 volt potential, the capacitor will seek and attempt to maintain that 5 volt potential (provided that the capacitor is rated at 5 volts or more). In an AC circuit, the capacitor will tend to smooth out the sin wave of the current, resisting change in both directions. In a DC power supply circuit, a capacitor will tend to reduce the voltage "ripple", and if the circuit is designed properly, will provide a smooth DC voltage. Shorting the terminals of a capacitor is effectively what often happens in many circuits; it's not a problem.
A cell of emf E volt and its internal resistance is 'r' ohm. The cell is connected to a load of 'R' ohm. The potential difference across the terminals of the cell is?
The resistance is equally proportionate to "r" in the case that it is above 1. Assuming "r" is greater than 1, the resistance is 4/3 multiplied by omega (the equal proportionate value for mass times ohms). If "r" is less than or equal to 1, there is no resistance.
Why are capacitors parallel?
Capacitors are said to be connected together "in parallel" when both of their terminals are respectively connected to each terminal of the other capacitor or capacitors. The voltage (Vc ) connected across all the capacitors that are connected in parallel is THE SAME. Then,Capacitors in Parallel have a "common voltage" supply across them giving: VC1 = VC2 = VC3 = VAB = 12V
What are the functions of rheostat?
Rheostat is simply a variable resistor. i.e., typically 3 contacts, either end of resistive element and slider contact that moves along resistive element. So, in old radios would typically be used as a volume control.AnswerA variable resistor may be used to control current, in which case it is called a rheostat. Or it may be used to control voltage, in which case it is called a potentiometer. In other words, the terms 'rheostat' and 'potentiometer' do not describe devices but, rather, they describe two applications of a variable resistor.As a rheostat, the variable resistor is connected in series with a load, and two of its three terminals are used -one of the fixed terminal and the slider terminal.As a potentiometer, the variable resistor is connected in parallel with a load, and each of its terminals are used. The two fixed terminals are connected across the supply, and one of the fixed terminals, together with the slider terminal, is connected across the load.
How much is the potential difference between the terminals of a connection wire?
The potential difference between the terminals of a connection wire is determined by the voltage difference applied across the wire. This voltage difference creates an electric field within the wire that causes charge carriers to move and establish a potential difference between the terminals.
It has a potential difference between the positive and negative terminals?
It is a battery.
What does a battery create between terminals?
Potential difference (voltage)
What is the potential difference across the terminals of a battery?
Please share your answer?
Each of the components connected by wires in a network is called a?
Each component in a network connected by wires is called a terminal. Components in a network that are not connected by wires, such as in a shared Wi-Fi connection are also called terminals.
What potential (voltage) exists between two power supply terminals if 5 joules of energy are required to move 10 coulombs of charge between the two terminals?
Half a volt, because the energy is the charge times the potential difference.Another AnswerYou should be asking what the 'potential difference' is between the two terminals, not the 'potential'. Note that 'voltage' is another term for potential difference.
How can two 4v lamps be lit up by two 2v cells?
-- Connect the cells in series. The two terminals of their series combination present a potential difference of 4 volts. -- Connect both lamps in parallel between the terminals of the series-connected cells.
A battery has emf of 6 v and an internal resistance of 4 ohm it is connected to a 2.6 ohm resistor a switch when switch is open the potential difference between the terminals of a battery is?
6 volts
How does a battery create potential energy?
A battery creates potential energy by storing chemical energy within it. This chemical energy is converted into electrical energy when the battery is connected in a circuit, generating a potential difference between the battery's terminals. This potential difference allows the flow of electrons through the circuit, thereby enabling the battery to power electronic devices.
How do you connect a voltmeter to a battery?
To measure the total emf simply connect the battery and voltmeter with the right terminals , but to measure the terminal potential difference which is less than the emf the voltmeter is connected in parallel with the battery
What is terminal PD?
A terminal potential difference is the potential difference appearing across the terminals of a voltage source, such as a battery or a generator, which varies according to the load supplied.When the battery or generator is off load (i.e. no load is connected to it), the terminal potential difference is equal to the electromotive force of that battery or generator.The terminal potential difference tends to decrease as the load current increases, due to a corresponding increase in the internal voltage drop of the battery or generator.
How does voltage produce current?
Voltage across two terminals mean there exists a potential difference, and when the circuit gets closed, due to this potential difference the current flow.
