High Order Thinking Skills questions come in exams for Physics in Standard 10 and if prepared properly can help you to score more marks. Questions and Answers. Though same current flows through the electric line wires an the bulb filament, yet only the filament glows. Give the reason behind it? The resistance of electric line wire is very very less than that of the filament of the bulb. Therefore, the current through the high resistance filament produces more heat which makes it glow. Electric potential is analogous to temperature.
As heat flows from higher temperature to lower temperature, so charges flow from higher potential to lower potential. Ammeter consists of a wire of low resistance when connected in parallel; a large amount of current passes through it hence gets burnt i.
For domestic purpose, we connect the electrical devices in parallel instead of connecting them in series. What are the advantages of connecting electrical devices in parallel? By connecting the electrical devices in parallel:- 1 each device gets the full or same voltage 2. The heating elements of electric toasters and electric iron are made of an alloy rather than a pure metal. The heating elements of electric toasters and electric irons are made of an alloy rather than a pure metal due to the following reasons:- 1.
Alloys have higher resistivity than their constituent elements. An ammeter is always connected in series across a circuit element. What happens when it is connected in parallel with the circuit element? The ammeter is alow resistance device. When it is connected in parallel, the resistance of the circuit reduces considerably. Therefore, a large current flows through the circuit, by virtue of which it may be damaged. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education.
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This Olympiad is a maths competitive examination conducted for the aspiring Revised date sheet for Class 12 - scroll down for datesheet for class 10 Revised datesheet for Class Download PDF. Previous Pause Next. More Study Material Printable Worksheets Download Worksheets for Class 10 Physics made for Electricity Class 10th Ncert Pdf Lab all important topics and is available for free download in pdf, chapter wise assignments or booklet with Notes Free revision notes, brief chapter explanations, chapter summary and mind maps for all important and difficult topics of CBSE Class 10 Physics as per Printable Assignments Download Class 10 Physics assignments.
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