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Class 7 Physics: Electric Circuits and Current

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Class 7 Physics: Electric Circuits and Current

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Questions and Answers

What is electric current defined as?

The total voltage supplied by a battery

The overall power consumed by an electric circuit

The rate of flow of charges (correct)

The resistance offered by components in a circuit

Which of the following is a common misconception about the direction of electric current?

Electric current flows from positive to negative

Electric current can flow in both directions at once

Electric current flows from negative to positive (correct)

Electric current only flows in one direction

What is one advantage of using a parallel circuit compared to a series circuit?

Voltage is consistent across all components in parallel

Parallel circuits are simpler to design and build

Failure of one component does not affect the entire circuit (correct)

Parallel circuits require fewer power sources

In a series circuit, what happens when an additional resistor is added?

<p>The total resistance increases</p> Signup and view all the answers

What is a key feature of circuit boards in electronic devices?

<p>They allow for complex circuits to be compactly organized</p> Signup and view all the answers

Study Notes

Electric Circuits and Current

Electric circuits contain components that control electrical energy flow.
Electric current is the rate of charge flow.
Series and parallel circuits are types of circuits.
Circuit boards are used in electronic devices.

Advantages of Circuits

Series Circuit: (advantage not specified, but implied)
Parallel Circuit: (advantage not specified, but implied)
Circuit Boards: (advantages of using circuit boards in electronic devices not specified)

Class 7 Physics Topics

Heating effects of electric current
Acids, bases, and salts

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Description

Explore the fundamentals of electric circuits and current in this quiz designed for Class 7 Physics. Understand the concepts of series and parallel circuits, and learn about the advantages of circuit boards in electronic devices. Test your knowledge on the heating effects of electric current and other related topics.