HARD
10th ICSE
IMPORTANT
Earn 100

How does the resistance of a metallic wire depend on its temperature? Explain with reason.

Important Questions on Current Electricity

EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 12
Which of the following is an ohmic resistance?
HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 13
What are the effecting factors of resistance?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 14
Define resistivity of a material and give it's S.I. unit.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 15

Name a material which is used for making the standard resistor. Give a reason for your answer.

HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 16
Name the material used for making a fuse wire. Give a reason.
HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 17
What is a superconductor? Give one example of it.
HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 18
Explain the meaning of the terms e.m.f., terminal voltage and internal resistance of cell.
HARD
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 8 - Current Electricity>QUESTIONS>Q 19
A battery of e.m.f. 3.0 V supplies current through a circuit in which resistance can be changed. A high resistance voltmeter is connected across the battery. When the current is 1.5 A, the voltmeter reads 2.7 V. The internal resistance of the battery is_____ohm.