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Published on: 04/10/2022
QB365 provides a detailed and simple solution for every Possible Book Back Questions in Class 10th Science Subject -Electricity, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Name any two devices, which are working on the heating effect of the electric current.
2.
Why is tungsten metal used in bulbs, but not in fuse wires?
3.
What happens to the resistance, as the conductor is made thicker?
4.
Define the unit of current.
1.
(i) Electric heater.
(ii) Electric iron work on the heating effect of current.
2.
(i) Melting point of tungsten is very.
(ii) Hence it is used in a filament bulb.
(iii) But a fuse wire should be made up of material which has low melting point.
3.
(i) Resistance is inversely proportional to area of cross section. \(\mathbf{R} \alpha \frac{l}{A}\)
(ii) A thicker wire has Iarger area of cross section and hence the resistance decreases.
4.
(i) The SI unit of current is ampere (A).
(ii) The current flowing through a conductor is said to be one ampere, when a charge of one coulomb flows across any cross-section of a conductor in one second.
\(1\ ampere=\cfrac { 1\ coulomb }{ 1\ second } \)
10th Standard Syllabus & Materials
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
