EASY
9th Kerala Board
IMPORTANT
Earn 100

Complete the table properly

Component Measuring device Unit
Potential difference   Joule/coulomb  
  ammeter   ampere

 

Important Questions on Current Electricity

EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 2
Given below are the diagrams showing the connection of ammeter and voltmeter in a circuit. Pick out the correct circuits.

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EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 3

Complete the table. The conductor is made of the same material.

Length of conductor Area of cross-section of conductor Resistance of the conductor
1 cm  2 cm2 10 Ω
2 cm  ..... 20 Ω
1 cm 4 cm2 .....

 

EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 4
In an electrical circuit if 100 J work is done to move 10 C electric charge from point A to the point B, find out the potential difference between the points A and B.
EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 5
6 electric cells are connected in series in an electronic device which works at 9 V potential difference. Find out emf of one cell.
EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 6
An ammeter that connects to an electronic circuit shows a reading of 2 A. Find how many charges flows through the ammeter in 10 s. 
EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 7
When a conductor is stretched, its length becomes double. Find out how many times the resistance changes. 
EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 8

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In the given graphs which is the graph depicting Ohm's Law? Justify your answer.

EASY
9th Kerala Board
IMPORTANT
Physics Standard IX Part 2>Chapter 6 - Current Electricity>Let us assess>Q 9
A conductor of 5Ω has length 2 m and area of cross-section 2 m2. If so, find out the resistivity of the material of the conductor.