EASY
10th ICSE
IMPORTANT
Earn 100

The storage battery of car has an emf of 12 V. If the internal resistance of the battery is 0.4 Ω. What is the maximum current that can be drawn from the battery?

Important Questions on Current Electricity

MEDIUM
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 34
Explain the determination of the internal resistance of a cell using voltmeter.
MEDIUM
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 35

How does the resistance of a wire change when: (i) its length is tripled (ii) its diameter is tripled?

EASY
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 36
Bends in a rubber pipe reduce the flow of water through it. How would the bends in a wire affect its electric resistance?
EASY
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 37
Define resistivity. Write an expression for the resistivity of a substance. Give the meaning of each symbol which occurs in it.
EASY
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 38
Distinguish between resistance and resistivity.
EASY
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 39

The resistance of a conductor of length x is r. If its area of cross section is a, what is its resistivity? What is its unit?

EASY
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 40
You have a metal, insulator and an alloy. Write these substances in the ascending order of their electrical resistivity.
EASY
10th ICSE
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Current Electricity>Exercise>Q 41
Why do we use copper and aluminium wire for transmission of electric current?