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Statistics with Economics plays the pivotal role in solving different scientific, industrial, or social problem faced within a system. It is defined as the study of social behaviour or society, including its origins, development, organisation, networks, and institutions.
Psychology is one of the most Interesting fields of studying behaviour and mind of an individual, based on various aspects of conscious and unconscious experience as well as thought. Civics is one of the core subjects to understand the theoretical and political aspects of citizenship, its rights and duties; the duties of citizens to each other as members of a political body and to the government.
Political science or popularly known as Polity is a branch of social science that deals with systems of governments, and the analysis of political activities, political thoughts and political behaviour. To download Political Science books for class 11 and class 12th use the below link. One of the Fascinating subject that includes the study of the past. Geography is the study of the physical features of the earth and its atmosphere. Science is one of the most important subjects that we encountered in the journey of our Education.
The field of Science is so vast and unexplored that it continue to fascinate our brain and soul. Physics is one of the most important branches of science that concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, the structure of atoms etc. Answer: Resistance of the circuit determines the rate at which energy is delivered by a current.
Question 2 An electric motor takes 5 A Maths Class 10th Ncert Pdf Reader from a V line. Determine the power of the motor and the energy consumed in 2 h. Question 1 A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. Question 2 Which of the following terms does not represent electrical power in a circuit?
Question 3 An electric bulb is rated V and W. Question 4 Two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then parallel in a circuit across the same potential difference.
The ratio of heat produced in series and parallel combinations would be : a 1 : 2 b 2 : 1 c 1 : 4 d 4 : 1 Answer: c 1 : 4. Question 5 How is a voltmeter connected in the circuit to measure the potential difference between two points? Answer: A voltmeter is connected in parallel to measure the potential Ncert 10th Science Notes Pdf Kindle difference between two points. Question 6 A copper wire has diameter 0. How much does the resistance change if the diameter is doubled? Answer: If a wire of diameter doubled to it is taken, then area of cross-section becomes four times.
Question 7 The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below : Plot a graph between V and I and calculate the resistance of the resistor. Solution: The graph between V and I for the above data is given below. The slope of the graph will give the value of resistance. Let us consider two points P and Q on the graph. Question 8 When a 12 V battery is connected across an unknown resistor, there is a Ncert Exemplar Class 10th Science Pdf 01 current of 2.
Find the value of the resistance of the resistor. Question 9 A battery of 9V is connected in series with resistors of 0. How much current would flow through the 12 Q resistor? Thus 4 resistors are needed to be connect. The equivalent resistance is. Question 12 Several electric bulbs designed to be used on a V electric supply line, are rated 10 W.
How many lamps can be connected in parallel with each other across the two wires of V line if the maximum allowable current is 5 A? What are the currents in the three cases? Solution: i When the two coils A and B are used separately. Solution: i The circuit diagram is shown in figure. Question 15 Two lamps, one rated W at V, and the other 60 W at V, are connected in parallel to electric mains supply.
What current is drawn from the line if the supply voltage is V? Calculate the rate at which heat is developed in the heater.
Question 18 Explain the following: i Why is tungsten used almost exclusively for filament of electric lamps? If the area of cross section of a conductor of fixed length is increased, then resistance decreases because there are more free electrons for movement in conductor.
So, they do not become too hot on passing electric current. Electric current, potential difference and electric current, Ohms law, Resistance, Resistivity factors on which the resistance of a conductor depends; Series combination of resistors, parallel combination of resistors; and its application on daily life; Heating effect of Electric current, electric Power, Interrelation between P, V, and R.
Formulae Handbook for Class 10 Maths and Science. Page What does an electric circuit mean? Electric circuit is a continuous and closed path made of conducting wires, through which the electric current flows. It comprises a cell, ammeter, voltmeter, plug key, etc.
Define the unit of current. SI unit of electric Electricity Class 10th Ncert Pdf Utility current is ampere A. Ampere is the flow of electric charges through an area at the rate of one coulomb per second, i. Question 1: Name a device that helps to maintain a potential difference across a conductor. Answer: Cell or battery eliminator. Question 2: What is meant by saying that the potential difference between two points is 1 V?
Question 3: How much energy is given to one coulomb of charge passing through a 6 V battery Answer:. Question 1: On what factors does the resistance of a conductor depend Answer: Resistance of a conductor depends upon: i Resistivity of the material.
Question 2: Will current flow more easily through a thick wire or thin wire of the same material when connected to the same source? Question 3: Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value.
Answer: Hence, the current through an electrical component also becomes half of its previous value. Question 4: Why are the coils of electric toasters and electric irons made of an alloy rather than a pure metal Answer: The coils of electric toaster and electric iron are made of an alloy rather than a pure metal because of the following reasons; i The resistivity of an alloy is higher than that of a pure metal.
Question 5: Use the data in Table Question 2: Redraw the circuit of the above question, putting in an ammeter to measure the current through the resistors and a voltmeter to measure the voltage across the 12 resistor. What would be the reading in the ammeter and the voltmeter?
Question 1: Judge the equivalent resistance when the following are connected in parallel. What is the resistance of an electric iron connected to the same source that takes as much current as all three appliances and what is the current flows through it? Question 3: What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series?
Answer: Advantages of connecting electrical devices in parallel:. Answer: a The highest resistance is secured by combining all four coils of resistance in series.
Question 1: Why does the cord of an electric heater not glow while the heating element does? Answer: The cord of an electric heater is made up of metallic wire such as copper or aluminum which has low resistance while the heating element is made up of an alloy which has more resistance than its constituent metals. Question 2: Compute the heat generated while transferring C of charge in one hour through a potential difference of 50 V.
Question 3: An electric iron of resistance 20 Q takes a current of 5 A. Question 1: What determines the rate at which energy is delivered by a current? Answer: Electric power determines the rate at which energy is delivered by a current. Question 2: An electric motor takes 5 A from a V line. Question 1: A piece of wire of resistance R is cut into five equal parts.
Question 2: Which of the following terms does not represent electrical power in a circuit? Question 3: An electric bulb is rated V and W. Question 4: Two conducting wires of same material and of equal lengths and diameters are first connected in series and then parallel in a circuit across the same potential difference. The ratio of heat produced in series and parallel combinations would be a b c d Answer:. Question 5: How is a voltmeter connected in the circuit to measure the potential difference between two points?
Question 6: A copper wire has a diameter 0. Question 7: The values of the current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below: Plot a graph between V and I and calculate the resistance of that resistor. Question 8: When a 12 V battery is connected across an unknown resistor, there is a current of 2.
Question 9: A battery of 9 V is connected in series with resistors of 0. Answer: Since all the resistors are in series, the same current, 0. Upon visiting the website, you have to register on the website with your phone number and email address. Then you will be able to download all the study materials of your preference in a click. You can also download the Class 10 Science Electricity solution Hindi medium from Vedantu app as well by following the similar procedures, but you have to download the app from Google play store before doing that.
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