Ncert Solutions Of Electricity Class 10th List,Wooden Kitchen Table Sticky 64,Total Fishing Tackle Returns Dog - Plans Download
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Hence, the sum of the resistances will give the value of R. Each component of a series circuit receives a small voltage so the amount of current decreases and the device becomes hot and does not work properly. Hence, series arrangement is not used in domestic circuits. So they are usually used for electricity transmission.
Previous Post Next Post. Contact form. LinkList ul li ul'. By Ohm's law, The reading of the ammeter is o. Answer: In parallel, there is no division of voltage among the appliances so the potential difference across all appliance is equal and the total effective resistance of a circuit can be reduced. Answer: The heating element of an electric heater is a resistor. Answer: The rate at which energy is delivered by a current is power.
Hence, Thus, option D is correct. Answer: A voltmeter should be connected in parallel, to measure the potential difference between two points. The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given be low � I amperes 0. Thus, Hence, 4 resistors of Ohm are connected in parallel to obtain 44 Ohm. Thus, Hence, bulbs of Ohm are connected in parallel to obtain 44 Ohm. Compare the power used in the resistor in each of the following circuits: i a 6 V battery in series with and resistors ii a 4 V battery in parallel with and resistors.
Answer: The tungsten used almost exclusively for filament of electric lamps because the melting point of tungsten is very high. Answer: The conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal because the resistivity of the alloy is more than a pure metal.
Answer: If any of the elements in the circuit get damaged the entire circuit will be affected. Answer: We know that Thus, the resistance of a wire is inversely proportional to its area of cross-section. Answer: Copper and aluminum wires usually employed for electricity transmission because they have low resistivity and they are good conductors of electricity.
Chapter No. Answer: Class 10 Science Chapter 12 Electricity carries 6 to 8 marks. Latest Articles. Kendriya Vidyalaya Pune Admission - Check the admission p Read More. Inspire Scholarship - Know eligibility criteria, dates, c View All Latest Articles. Explore Popular Degree, Branches and Courses.
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Day-cum-Boarding Schools in India. Marathi Medium Schools in India. Telugu Medium Schools in India. English Medium Schools in India. Gujarati Medium Schools in India. Hindi Medium Schools in India. Let, three resistors R 1 , R 2 , and R 3 get connected in series. Resistors in Parallel: When resistors are joined in parallel, the reciprocal of the total resistance of the system is equal to the sum of reciprocal of the resistance of resistors.
Let three resistors R 1 , R 2 and R 3 connected in parallel. The total current through the circuit can be calculated by adding the electric current through individual resistors. Heating Effect of Electric Current: When electric current is supplied to a purely resistive conductor, the energy of electric current is dissipated entirely in the form of heat and as a result, resistor gets heated.
The heating of resistor because of dissipation of electrical energy is commonly known as Heating Effect of Electric Current. Some examples are as follows : When electric energy is supplied to an electric bulb, the filament gets heated because of which, it gives light. The heating of electric bulb happens because of heating effect of electric current. Cause of Heating Effect of Electric Current: Electric current generates heat to overcome the resistance offered by the conductor through which it passes.
Higher the resistance, the electric current will generate higher amount of heat. Thus, generation of heat by electric current while passing through a conductor is an inevitable consequence. This heating effect is used in many appliances, such as electric iron, electric heater, electric geyser, etc. Electric Bulb: In an electric bulb, the filament of bulb gives light because of the heating effect of electricity.
Electric Fuse: Electric fuse is used to protect the electric appliances from high voltage if any. Electric fuse is made of metal or alloy of metals, such as aluminum, copper, iron, lead, etc. In the case Ncert Solutions Class 10th Maths Chapter 13 List of flow of higher voltage than specified, fuse wire melts and protect the electric appliances. Suppose, if an electric heater consumes W at V. Electric Power S. Unit of electric energy is kilowatt-hour kWh. Conductor: The material which can allow the flow of electrons through itself is called the conductor.
It has a large number of free electrons. It offers low opposition in the flow of current. Insulator: The material which does not allow the flow of electrons through itself is called insulator. It has less or no free electrons. It offers high opposition in the flow of current. Electric Current: The amount of flow charge through any cross-sectional area of a conductor in unity time is called Electric Current.
Electric Current is a scalar quantity. It is measured by an ammeter. Direction: The direction of conventional current or practical current is opposite to the flow of electrons. Electric potential: Electric Potential at any point in the electric field is defined as the amount of work done to bring the unit positive charge from infinity from outside the electric field to that point.
It is a scalar quantity. The -ve charge flows from lower to a higher potential. The difference of electric potential between any two points in the electric field is called Electric Potential difference.
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