Concise Physics Class 9 ICSE Solutions for Chapter 9 - Current Electricity

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ICSE Class 9 Physics Chapter 9 Selina Concise Solutions - Free PDF Download

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Selina is one of the best-prescribed books for preparing physics for the ICSE board.

Preparing for a conceptual subject like Physics requires a lot of practice, especially in the numerical part. You need to have a good understanding of the concepts for the numerical part.


At Vedantu, you will get concise solutions to the Class 9 Physics Chapter 9 Current Electricity. The solutions prepared by our subject experts are par with the updated ICSE syllabus. You can download the PDF format of the solved chapters as well as the solved previous years’ question papers for your exam preparation.

Selina Concise Physics Class 9 ICSE Solutions for Chapter 9 Current Electricity part-1
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FAQ (Frequently Asked Questions)

Q1: Write the Key Differences Between the Primary Cell and the Secondary Cell.

Ans:


Primary Cell

Secondary Cell

Irreversible chemical reactions

Irreversible chemical reactions

Can’t be recharged

Can be recharged

When current is drawn from the primary cell, the chemical energy transforms to electrical energy.

During charging: Electrical energy converts into chemical energy.


During discharging: Chemical energy converts into chemical energy.

Q2: Why Does a Metal Wire, When Connected to a Cell, Offer Resistance to the Flow of Current?

Ans: A metal wire has free electrons that move randomly, so when a wire is connected to the battery, electrons start drifting from a negative terminal to its positive terminal.


As they move, they collide with each other and with the fixed ions of the wire. This collision affects their speed and changes their direction. Because of this, the electrons move slowly towards the positive terminal. Thus, the wire offers resistance to the flow of current.

Q3: Name any one Most Non-Polluting and Efficient Lightning Device.

Ans: LED is the most non-polluting and efficient lightning device.

Q4: How can I Improve my Numerical Solving Ability in Selina Physics?

Ans: You can go through the solved solutions of the Selina book, available on our website. Practice those you will have a good hold on numerical solving ability.