Class 10 Physics Chapter 5 Notes

Complete Notes on Chapter No.14:  class 10 physics chapter 5 notes written by Mr. Tayyab Shahzad. These computerized notes are very helpful in the preparation of class 10 physics chapter 5 notes for students of the Physics and these are according to the paper patterns of all Punjab boards.

• Important class 10 physics chapter 5 notes pdf for all students of Punjab  Textbook Board.
• Current Electricity Exercise Multiple Choice Questions ( MCQs ) with Correct Answers
• Current Electricity Exercise Short Questions with Answers
• Define the term Electric Current.
• Important 10th class physics chapter 5 notes for all students of Punjab  Textbook Board.
• What is the difference between Electronic current and Conventional current?
• How can we differentiate between E.M.F and Potential difference?
• Define Ohm’s Law.
• Important physics class 10 chapter 5 notes for all students of Punjab  Textbook Board.
• Define Resistance and its Units.
• What is the difference between Conductors and Insulators?
• What is Joule’s law?
• Important physics chapter 5 class 10 notes for all students of Punjab  Textbook Board.
• What is the difference between D.C and A.C?
• Discuss the main features of Parallel combination of resistors.
• Determine the equivalent resistance of a Series combination of resistors.
• Important chapter 5 physics class 10 notes for all students of Punjab  Textbook Board.
• Describe briefly the Hazards of household electricity.
• Describe two safety measures that should be taken in connection with the household circuit?
• Define circuit breaker.
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• What is the difference between a cell and a battery?
• Can current flow in a circuit without potential difference?
• What are damp conditions?
• Important class 10 physics notes chapter 5 for all students of Punjab  Textbook Board.
• In order to measure current in a circuit why ammeter is always connected in series? 
• In order to measure voltage in a circuit voltmeter is always connected in parallel. Discuss?
• What is meant by earth wire?
• Why diamond does not conduct electricity?
• Important notes class 10 physics chapter 5 for all students of Punjab  Textbook Board.
• Define electric potential and write its unit?
• Define unit of power.
• Does a fuse in a circuit control the potential difference or the current?
• Define unit of current.  
• Important notes for class 10 physics chapter 5 for all students of Punjab  Textbook Board.
• Define Ohmic and Non-Ohmic Materials.
• Define Resistivity and write its unit.
• Define Kilowatt hour.
• Define electric power
• Important physics notes for class 10 chapter 5 numericals for all students of Punjab  Textbook Board.
• Conventional Current: Before the idea of free electrons which constitute current in metals, it was thought that current in conductors flows due to the motion of positive charges. Therefore, this convention is still in use. We can understand the concept of conventional current from the following analogies. We know that when the ends of heated copper wire are at different temperatures, heat energy flows from the end at higher temperature to the end at lower temperature. The flow stops when both ends reach the same temperature. 
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• Water in a pipe also flows from higher level to the lower level. Similarly, when a conductor is connected to a battery, it pushes charges to flow current from higher potential to the lower potential. The flow of current continues as long as there is a potential difference.
• Conventional current is defined as:
• Important class 10th physics chapter 14 important questions for all students of Punjab  Textbook Board.
• "Current flowing from positive to negative terminal of a battery due to the flow of positive charges is called conventional current".
• Conventional current produces the same effect as the current flowing from negative terminal to the positive terminal due to the flow of negative charges.
• Important 10th class physics chapter 14 short questions for all students of Punjab  Textbook Board.
• The Measurement of Current: How can we come to know that current has been established in the conductor? For this purpose, we use different electrical instruments which detect the current in the circuit. Galvanometer and ammeter are some common examples of current measuring instruments.
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• Galvanometer is very sensitive instrument and can detect small current in a circuit. A current of few milliamperes is sufficient to cause full scale deflection in it. While making the connections polarity of the terminals of the galvanometer should be taken into consideration.
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• POTENTIAL DIFFERENCE: When one end A of a conductor is connected to the positive terminal and its other end B is connected to the negative terminal of the battery, then the potential at A becomes higher than the potential at B.
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• This causes a potential difference between the two ends of the conductor. The flow of current continues as long as there is a potential difference. The agency which provides the potential difference for the steady flow of current in the copper wire is the battery. 
• Important 10th class physics chapter 14 notes for all students of Punjab  Textbook Board.
• "Potential difference across the two ends of a conductor causes the dissipation of electrical energy into other forms of energy as charges flow through the circuit". SI unit of potential difference is volt.
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