12th Standard Syllabus & Materials
12th Standard
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TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A
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TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A
Published on: 28/08/2019
Current Electricity
Download Tamil Nadu 12th Standard Physics 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 Physics Test1.
The temperature co-efficient of resistance for alloys is _____________.
low
very low
high
very high
2.
Which of the following has negative temperature coefficient of resistance?
copper
tungsten
carbon
silver
3.
When 'n' resistors of equal resistance (R) are connected in series and in parallel respectively, then the ratio of their effective resistance is ______________
1: n2
n2: 1
n: 1
1: n
4.
A carbon resistor of (47 ± 4.7 ) k Ω to be marked with rings of different colours for its identification. The colour code sequence will be ______.
Yellow – Green – Violet – Gold
Yellow – Violet – Orange – Silver
Violet – Yellow – Orange – Silver
Green – Orange – Violet - Gold
5.
A toaster operating at 240 V has a resistance of 120 Ω. The power is ______.
400 W
2 W
480 W
240 W
6.
Energy
7.
Power
8.
Resistance
9.
Current
10.
Electrical Lamp
1.
(a)
low
2.
(c)
carbon
3.
(b)
n2: 1
4.
Yellow - 4
Violet - 7
Orange - 103
Silver - Tolerance - 10%
5.
\(P=\frac{V^2}{R}=\frac{240 \times 240}{120}=480 \ W\)
6.
joule
7.
watt
8.
ohm
9.
ampere
10.
Tungsten
12th Standard Syllabus & Materials
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Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
English
French
Tamilnadu Stateboard Standards
