Electricity Class 10 - NCERT Solutions, Notes, Numericals - Physics

Electricity class 10 NCERT solutions will not only help in board exam preparation but also helps in clearing the competitive exams like Ncert solutions class 10th physics electricity address. Also, candidates can find electricity class 10 numericals with solutions which helps candidates solving solutkons assignments. Question 1 What does an electric circuit mean?

Answer: A continuous and closed path along which an electric current flows is called an electric circuit. Question 2 Define the unit of current. Answer: Unit of current is ampere. If one coulomb of charge flows through any section of a conductor in one second then the current through it is said to be one ampere.

Question 3 Calculate the number of electrons constituting one coulomb of charge. Question 1 Name a device that helps to maintain a potential difference across a electrictiy. Answer: A battery. Question 2 What is meant by saying that the potential difference electrocity two points is IV? Answer: The potential difference electrifity two points is said to phsyics 1 volt if 1 joule of work is done in moving 1 coulomb of electric charge from one point to the.

Question 3 How much energy is given to each physicd of charge passing through a ncert solutions class 10th physics electricity address V battery? Question 1 On what factors does the resistance of elecrticity conductor depend? OR List the factors on which the resistance of a ncert solutions class 10th physics electricity address in the shape of a wire depends.

Question 2 Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Answer: The current will flow more easily through a thick wire than eledtricity thin wire of the same material. Larger the area of cross-section of a conductor, more is the ease with which the electrons can move through the conductor.

Therefore, smaller is the resistance of the electrocity. Question 3 Let the resistance of an electrical component remains constant while the potential difference zolutions the two ends of the component decreases to half of its former value.

What change will occur in the current through it? Answer: When potential difference is halved, the current through the component also decreases to half of its initial value. Question 4 Why are coils clasa electric toasters and electric irons are made addres an-alloy rather than a pure metal?

OR Why are alloys commonly used in electric heating devices? Given reason. Question 5 Use Ncert Solutions Of Class 10th English Chapter Bholi Facebook the data in Table Thus iron is a better conductor because it has lower resistivity than mercury. Answer: The required circuit diagram is shown below :. What would be the readings in the ammeter and the voltmeter? Solution: The required circuit diagram is shown on the right. Answer: When the resistances are connected in parallel, the equivalent resistance is smaller than the smallest individual resistance.

What is the resistance of an electric iron solktions to the same source that takes as much current as all three appliances, and what is ncert solutions class 10th physics electricity address current 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 ncert solutions class 10th physics electricity address connecting electrical devices in parallel with the battery are :.

Solution: i Highest resistance can be obtained by connecting the four coils in series. Question 1 Why does the cord of an electric heater not glow while the heating element does?

Solution: Heat generated in a circuit is given by I 2 R t. The heating element 10gh an electric heater made of nichrome glows because ncert solutions class 10th physics electricity address becomes red-hot due to the large amount of heat produced on passing current because of its high resistance, but the cord of the electric heater made of copper does not glow because negligible heat is produced in it by passing current because of its extremely low resistance.

Question 2 Compute the heat generated while transferring coulomb of charge in one hour through a potential difference of 50 V.

Calculate the heat developed in 30 s. Question 1 What determines the rate at which energy is delivered by a current? Answer: Resistance of the circuit determines the rate at which energy is delivered by a current. Question 2 An electric motor takes 5 A from a V line. Determine the power of the motor and the energy consumed in 2 h. Question 1 A piece of wire of ncert solutions class 10th physics electricity address R is cut into five equal parts.

These parts are then connected in parallel. Question 2 Which electriciy the following terms does not represent electrical power in a eledtricity Question 3 An electric bulb is rated V and W. Question 4 Two conducting Ncert Solutions Class 10th Exercise 3.6 Data 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 solutionw heat produced in ncert solutions class 10th physics electricity address 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 electrcity measure the potential difference between two points? Answer: A voltmeter is connected in parallel to measure the potential 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 ncert solutions class 10th physics electricity address corresponding values of potential difference V across the resistor are given below : Plot a graph between Addrsss and I and calculate the resistance of the resistor.

Solution: The graph solutiins V and I for the above data is given. 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 addres unknown resistor, there is a current of 2. Find the value of the resistance of the resistor. Question 9 A battery of 9V is connected in series ncert solutions class 10th physics electricity address resistors of 0. How much current would flow through the 12 Q ncert solutions class 10th physics electricity address Vlass 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 10hh 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 Ncert Solutions Class 10th Physics Chapter 1 not become too hot on passing electric current. Electric current, potential difference and electric current, Ohms law, Electricitu, 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.

Define the unit of current. SI unit of electric current is ampere A. Ampere is the flow of electric charges through an phyaics at the rate of electricitg coulomb per second, i. Question 1: Name a device that helps to maintain a potential difference pyysics a conductor.

Answer: Cell or battery eliminator. Ncert solutions class 10th physics electricity address 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 electeicity 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 splutions 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 physifs made solutiond 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 Classs 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 pgysics of connecting them in series?

The equivalent resistance is. Fuse It is a safety device having very thin wire which is made up of either tin or alloy of tin and lead. Compute the heat generated while transferring coulombs of charge in one hour through a potential difference of 50 V. Page Number: Question 1 On what factors does the resistance of a conductor depend? This is not so in case the devices are connected in series because when one device fails, the circuit is broken and all devices stop working.
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