Physics Class 10 Chapter 5 Short Notes

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

• Important 10th class physics chapter 5 mcqs 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 mcqs of physics class 10 chapter 5 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 mcqs test of physics class 10 chapter 5 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 class 10 chapter 5 mcqs for all students of Punjab  Textbook Board.
• What is the difference between D.C and A.C?
• Discuss the main features of the Parallel combination of resistors.
• Determine the equivalent resistance of a Series combination of resistors.
• Important 10 class physics chapter 5 mcqs for all students of Punjab  Textbook Board.
• Describe briefly the Hazards of household electricity.
• What are damp conditions? 
• In order to measure current in a circuit why ammeter is always connected in series? 
• Important class 10 physics chapter 5 mcqs with answers for all students of Punjab  Textbook Board.
• What is meant by earth wire?
• Why diamond does not conduct electricity?
• Define electric potential and write its unit.
• Important physics mcqs for class 10 chapter 5 for all students of Punjab  Textbook Board.
• Define the unit of power.
• Does a fuse in a circuit control the potential difference or the current?
• Define Ohmic and Non-Ohmic Materials.
• Define Resistivity and write its unit.
• Define electric power
• A source of electromotive force (e.m.f.) converts nonelectrical energy (chemical, thermal, mechanical etc.) into electrical energy.
•  Examples of sources of e.m.f. are batteries, thermocouples and generators. When a conductor is connected to a battery, current flows through it due to potential difference. For the continuous flow of current through a wire, battery supplies energy to the charges.
• Important class 10 physics chapter 5 important questions for all students of Punjab  Textbook Board.
•  The positive charge leaves the positive terminal of the battery, passes through the conductor and reaches the negative terminal of the battery. As a positive charge enters the battery at its lower potential point (negative terminal), the battery must supply energy, say to the positive charge to drive it to a point of higher potential i.e., positive terminal.
• Important 10th class physics chapter 5 important questions for all students of Punjab  Textbook Board.
•  Now we define e.m.f. of the source as: 
• "It is the energy supplied by a battery to a unit positive charge when it flows through the closed circuit. Or The energy converted from non-electrical forms to electrical form when one coulomb of positive charge passes through the battery".   Thus e.m.f = Energy / Charge , or  E = W / Q
• Important physics class 10 chapter 5 important questions for all students of Punjab  Textbook Board.
• where E is the e.m.f., W is energy converted from nonelectrical forms to electrical form and Q is positive charge. -1 For your information The unit for e.m.f. is JC^-1 which is equal to volt (V) in SI system.
• Important 10th class physics chapter 5 mcqs solved for all students of Punjab  Textbook Board.
• OHM'S LAW: The value of the current changes with the changes in potential difference and is explained by Ohm's law, stated as:
• "The amount of current passing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature and the physical state of the conductor does not change".  I V or V I, or V = RI
• Important 10th class physics chapter 5 exercise for all students of Punjab  Textbook Board.
• Where R is the constant of proportionality, and is the resistance of the conductors. Its SI unit is ohm, denoted by a symbol Ω. If a graph is plotted between the current I and the potential difference V, a straight line will be obtained. 
• Important class 10 physics chapter 5 exercise solutions for all students of Punjab  Textbook Board.
• Resistance: The property of a substance which offers opposition to the flow of current through it is called its resistance. This opposition comes from the collisions of moving electrons with atoms of the substance.
• Important physics important questions class 10 chapter 5 for all students of Punjab  Textbook Board.
• Unit of Resistance Ohm: The SI unit of resistance R is ohm. If we put V = 1 V, and I = 1 A, the value of R will be 1Ω. Thus 
• "When a potential difference of one volt is applied across the ends of a conductor and one ampere of current passes through it, then its resistance will be one ohm".
• Important physics class 10 chapter 4 mcqs for all students of Punjab  Textbook Board.