1. How can you identify a circuit is open or closed?
2. What do you mean by electrical resistance?
3. State Ohm's Law.
4. Make a short note on efficientuse of energy.
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physics
chapter-9
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Answer:
If there's a break anywhere in the path, you have an open circuit, and the current stops flowing — and the metal atoms in the wire quickly settle down to a peaceful, electrically neutral existence. A closed circuit allows current to flow, but an open circuit leaves electrons stranded.
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Answer 1 :-
a) Open circuit:- means the wires are cut off so there will be no current flow, but there is voltage.
b) Closed circuit:- means the wires arOhm's law, description of the relationship between current, voltage, and resistance. The amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials.e connected so there will be flow of current, but there is no voltage.
Answer 2 :-
Electrical. Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega.
Answer 3 :-
Ohm's law, description of the relationship between current, voltage, and resistance. The amount of steady current through a large number of materials is directly proportional to the potential difference, or voltage, across the materials.
Answer 4 :-
Energy efficiency is a means of measuring the energy-expenditure required to achieve a certain benefit. The lower the losses in energy to achieve a specific purpose are, the higher is the degree of energy efficiency.
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