9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கற்கண்டு (இலக்கணம்) - தொடர் இலக்கணம், ஆகுபெயர் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -விரிவானம் (துணைப்பாடம்) - தாய்மைக்கு வறட்சி இல்லை! Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கவிதை பேழை (செய்யுள்) - மார்கழி பெருவிழா Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர்-இலக்கணம் - பகுபத உறுப்பிலக்கணம் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர் - இலக்கணம்-எழுத்து -அளபெடை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர்-துணைப்பாடம் - ஆறாம்திணை Important Questions And Answers Study Material - QB365 Set A
Published on: 08/12/2020
9th Standard Science Electric Charge and Electric Current English Medium Free Online Test 1 Mark Questions 2020-2021
Download Tamil Nadu 9th 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.
Assertion (A) : A bird perches on a high power line and nothing happens to the bird.
Reason (R) : The level of bird is very high from the ground.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If assertion is false but reason is true
2.
Assertion (A) Electric current will not flow between two charged bodies when connected if their charges are same.
Reason (R) Current is the rate of flow of charge.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If assertion is false but reason is true.
3.
The resistance of a conductor is R. If its length is doubled, then its new resistance will be_______________
R
2R
4R
8R
4.
Two resistances R1 and R2 are connected is parallel. Their equivalent resistance is__________
R1+R2
\(\cfrac { { R }_{ 1 }{ R }_{ 2 } }{ { R }_{ 1 }+{ R }_{ 2 } } \)
\(\cfrac { { R }_{ 1 }+{ R }_{ 2 } }{ { R }_{ 1 }{ R }_{ 2 } } \)
\(\sqrt { { R }_{ 1 }+{ R }_{ 2 } } \)
5.
A current of 2A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is__________
0.5\(\Omega \)
2\(\Omega \)
4\(\Omega \)
20\(\Omega \)
6.
Resistance of a wire depends on
temperature
geometry
nature of material
all the above
7.
The following is not a safety device.
Fuse
Trip switch
Ground connection
Wire
8.
In an electrolyte the current is due to the flow of
electrons
positive ions
both (a) and (b)
neither (a) nor (b)
9.
Electric field lines________ from positive charge and__________ in negative charge.
start; start
end; start
start; end
end; end
10.
In current electricity, a positive charge refers to,
presence of electron
presence of proton
absence of electron
absence of proton
1.
(c)
If assertion is true but reason is false
2.
(d)
If assertion is false but reason is true.
3.
(c)
4R
4.
(b)
\(\cfrac { { R }_{ 1 }{ R }_{ 2 } }{ { R }_{ 1 }+{ R }_{ 2 } } \)
5.
(b)
2\(\Omega \)
6.
(d)
all the above
7.
(d)
Wire
8.
(c)
both (a) and (b)
9.
(b)
end; start
10.
(b)
presence of proton
9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - மணிமேகலை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - ஏறு தழுவுதல் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர் - தண்ணீர் Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
