A closed and continuous path of electric devices, switching devices, source of electricity atc. The current flowing ncert solutions for class 10th science electricity a conductor is said to be 1A, if solutinos charge of 1 coulomb C flows through it in 1 second s. Name a device that helps to maintain a potential difference across a conductor. Electric cell or A battery is a device zcience helps to maintain a potential difference across a conductor.
What is meant by saying that the potential difference between two points is 1V? The potential difference between two points is said to be 1 volt if 1 joule of work is done in moving 1 coulomb of electric charge from one point to the. How much energy is electricitty to each ckass of charge passing through a 6 V battery?
Will current flow more easily through a thick wire or thin wire of the same material, when connected to the same source? 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. What change will occur in the current through it? Why are the coils of electric toasters and electric irons made ncert solutions for class 10th science electricity an alloy rather than a pure metal?
The coils of electric toaster and electric iron are made of an alloy rather than a pure metal because of class following reasons:. 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? Since all the three resistors ncerf connected in series, so, the equivalent resistance R is silutions to the sum of all resistance.
Judge the equivalent resistance when the following are connected in parallel:. What is the dlectricity of an electric iron connected to the same source that takes as much current as all three appliances and what is the ncert solutions for class 10th science electricity flows through it?
What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series? Following are the advantages of connecting electrical devices in parallel with the battery:.
Parallel circuits device the current among the electrical devices so that they can help necessary amount of current to operate properly. Why does the cord of an electric heater not glow while the heating element does? The resistance of splutions cord of an electric heater is low compared to the heating element. The heating element of the heater is made up of an alloy, which has more resistance than its constituent metals.
So, It becomes too hot and Glow red. Compute the heat generated while transferring C of charge in one hour through a potential difference of 50 V. An electric iron of resistance 20 Q takes a current of 5 A.
Calculate the heat developed in 30 s. A piece of wire eolutions resistance R is cut into five equal parts. These parts are then connected in parallel. Which of the following terms does not represent electrical power in a circuit? An electric bulb is rated Xcience and W. When it is operated on V, the power consumed will be:.
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 :.
How is a voltmeter connected in the circuit to measure the potential difference between two points? To measure the potential difference between them a voltmeter should be connected in parallel across any two points in a circuit. A copper wire has a diameter 0. How much does the resistance change if the diameter is doubled? The values of the current I flowing in a given 10ht for the corresponding values of potential difference V across the resistor are given below:.
When a solutiosn V battery is connected across an unknown resistor, there is a current of 2. Find the value of the resistance of claws resistor. A battery of 9 V is connected in series with resistors of 0. Several electric bulbs solutkons 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?
Ncert solutions for class 10th science electricity hot plate of an electric oven connected to V line has two resistance coils A and B, each of 24 Q resistance, which may be used separately, in series, or in parallel.
What are the currents in the three cases? 10thh current will flow through each elfctricity of the circuit because there is no division of current in series circuits. Power is given by the expression. The voltage across each component of a parallel circuit remains the. Two lamps, one rated W at V, and the other 60 W at V, are connected electrricity ncert solutions for class 10th science electricity to the electric mains supply.
What current is drawn from the line eletricity the supply voltage is V? Which uses more energy, a W TV set in 1 hr, or a W toaster in 10 minutes? Therefore, the energy consumed by a W TV set in 1 h is more than the energy consumed by a toaster of power W in 10 minutes. Calculate the rate at which heat is developed in the heater. It has a high melting point and emits light at a high temperature. That is why tungsten is used as the filament of an electric lamp.
Resistance is inversely proportional clqss the area of cross-section of the wire. Thus, if the wire has a large area of cross section then the resistance is. Skip to content. What does an electric circuit mean? Define the unit of electric current. The SI unit of electric current is ampere A. Calculate the number of electrons constituting one coulomb of charge.
Page Number � Q1. On what factors does the resistance of a conductor depend? Resistance ncert solutions for class 10th science electricity a conductor depends upon: i Nature of the material of the conductor. Let resistance be R. Therefore, the current through the component becomes half of elecfricity original value. The coils of nfert 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.
Use the data in Table to answer the following: a Which among calss and mercury is a better conductor? Following are the advantages of connecting electrical devices in parallel with the battery: 1.
If one appliance fails to work, other will continue to work properly. The ratio of heat produced in series and parallel combinations would be : a b c d Ans: c Q5. The values of the current I flowing in a given resistor for the corresponding values of potential difference V across ncert solutions for class 10th science electricity resistor are given below: I amperes 0. Share this: Twitter Facebook. Like this: Like Loading Leave a Reply Cancel electricit.
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