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Small currents do flow when things are switched off, in the wires that remain live. The power used by them, and the energy registered on the meter, is very very small.
The currents flow in the capacitance of the wires, which is maybe 50-100 pF per metre of wire. The currents are reactive, in other words the energy flows into the wire and back out twice each cycle, so that the net power is nearly zero, so you pay virtually nothing.
If a house has 20 metres of permanent wiring, the capacitance might be 1 nanofarad, and the reactive current going through the meter would then be 75 microamps on a 240 v 50 Hz system. That current in a resistance of 0.1 ohms would absorb a power of roughly 10-9 watts.
What else can I help you with?
True or false a closed circuit is an incomplete loop?
False. A closed circuit is a complete loop where electricity can flow continuously from the power source, through the components, and back to the source.
What is The complete path of an electric current described as?
The complete path of an electric current is described as a closed loop circuit. This means that the current flows from the power source through a continuous path of conductive materials, such as wires and components, and back to the power source. Without a closed loop, the current cannot flow continuously and the circuit will not work.
Can electric circuit b completed without earth?
Yes, an electric circuit can be completed without connecting it to earth. The circuit needs a complete path for the current to flow back to the source, so as long as the circuit is properly connected and the electrons can flow through the components, it will work without needing an earth connection.
What is the continuous loop that an electric current flows through?
The continuous loop that an electric current flows through is called a circuit. It typically consists of a power source (such as a battery), conductive wires, and components like resistors, switches, and light bulbs. When the circuit is complete, electrons can flow continuously through the loop, allowing electrical energy to be transferred and used.
Is a closed circuit exactly like a complete circuit?
A closed circuit is a circuit where current can flow because it forms a continuous path, while a complete circuit is a closed circuit that includes all necessary components like a power source, load, and conductive path. So, a closed circuit can be a complete circuit if it has all the necessary components connected together.
What is the difference between a circuit braker and a relay?
A circuit breaker when energized will latch and stay in that position until the load is reduced and manually reset. a relay will change state continuously if the source continuously changes
What parts are necessary for a simple complete circuit?
-- power supply -- power-dissipating component -- connecting conductors
What does an electric current need in order to flow?
An electric current needs a closed circuit, which provides a complete path for the flow of electrons. This circuit typically includes a power source, such as a battery or generator, connecting wires, and a load, such as a light bulb or motor, that utilizes the electricity. Without a closed circuit, electrons cannot flow continuously and no electric current is generated.
True or false a closed circuit is an incomplete loop?
False. A closed circuit is a complete loop where electricity can flow continuously from the power source, through the components, and back to the source.
What is a complete loop that electricity flows around?
A complete loop that electricity flows around is called a circuit. A circuit typically includes a power source (such as a battery), conductive wires, and a load (such as a light bulb or motor) that uses the electrical energy. When the circuit is closed or completed, electricity can flow continuously to power the load.
Do you expect angle in rlc series circuit to be a constant?
The phase shift angle of an RLC circuit is constant for a constant frequency, but changes with different frequencies.The phase angle of the AC in the RLC circuit is however continuously changing. Otherwise it wouldn't be AC.
What does a simple circuit consists of?
A simple circuit consists of a power source (such as a battery), a load (such as a light bulb), and wires connecting them in a complete loop. When the circuit is closed, the power source provides electricity to the load, causing it to operate.
A complete circuit is made of three things?
A complete circuit is made up of a power source (such as a battery), a load (such as a lightbulb), and conductive material (such as wires) connecting the two. When these three elements are connected in a closed loop, electrons can flow through the circuit, allowing the load to receive electrical energy and operate.
Is current constant through a circuit?
Yes, in a closed circuit, the current is constant and flows continuously through the circuit.
What step is unique to connecting an ohmmeter in the circuit?
check the circuit with a voltmeter to make sure the circuit is not powered
What what is an oscillator?
a circuit that produces a continuously oscillating signal.
What do open and closed circuits have in common?
Both open and closed circuits involve the flow of electric current. In an open circuit, the current is interrupted or stopped due to a gap in the circuit, while in a closed circuit, the current flows continuously through a complete loop of conductor.
