Electricity Class 10 Flashcards

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Questions and Answers

What is electric current?

Orderly flow of electrons in a conductor per unit time (or) rate of flow of charges in a conductor.

What is a switch?

Conducting link between cell and bulb.

What is an electric circuit?

Continuous and closed path of an electric current.

What symbol is used to represent electric current?

I Signup and view all the answers

What symbol is used to represent electric charge?

Q Signup and view all the answers

What brings the electrons in order?

Battery Signup and view all the answers

What is the formula to find the electric current in a conductor?

I=Q/t Signup and view all the answers

What is the SI unit of electric charge?

Coulomb, C Signup and view all the answers

What is the SI unit of electric current?

Ampere, A Signup and view all the answers

What instrument is used to measure electric current?

Ammeter Signup and view all the answers

Define one ampere.

One ampere is constituted by the flow of one coulomb of charge per second. Signup and view all the answers

How is an ammeter connected in a circuit?

Series Signup and view all the answers

What is the conventional direction of electric current?

In the direction of flow of positive charges (or) opposite to the flow of electrons. Signup and view all the answers

What are the two types of electric charges?

Positive and negative Signup and view all the answers

What is the number of negative electric charge in a circuit?

-1.6×10⁻¹⁹ C Signup and view all the answers

What is the formula to find electric charge if the total number of charges is given?

Q=ne where the value of e is -1.6×10⁻¹⁹ Signup and view all the answers

How many charge carriers constitute one coulomb of charges?

6×10¹⁸ Signup and view all the answers

What is the range of an ammeter?

2 Signup and view all the answers

What is electric potential?

The work required to move a unit charge from one point to another point. Signup and view all the answers

What is the formula to find Electric Potential?

V=W/Q Signup and view all the answers

Which charge has higher potential?

Positive Signup and view all the answers

What is the SI unit of potential difference?

Joule/coulomb which is represented as volt (V) Signup and view all the answers

What instrument is used to measure potential difference?

Voltmeter Signup and view all the answers

How is a voltmeter connected in a circuit?

Parallel to (across) the circuit. Signup and view all the answers

What is the range of a voltmeter?

10 Signup and view all the answers

Study Notes

Electric Current

Electric current refers to the orderly flow of electrons in a conductor over time.
It is quantified as the rate of flow of electric charges through a conductor.

Switch

A switch acts as a conducting link between the cell and the bulb, enabling control over the circuit.

Electric Circuit

An electric circuit is a continuous and closed path that allows electric current to flow.

Symbols in Electricity

The symbol "I" represents electric current.
The symbol "Q" represents electric charge.

Battery Function

A battery is responsible for bringing electrons into an organized flow in a circuit.

Current Calculation

Electric current (I) can be calculated using the formula: I = Q/t, where Q is the charge and t is time.

Units of Measurement

The SI unit of electric charge is the coulomb (C).
The SI unit of electric current is the ampere (A).

Measuring Instruments

An ammeter is an instrument used to measure electric current.
An ammeter must be connected in series within a circuit to measure current accurately.

Definition of Ampere

One ampere is defined as the flow of one coulomb of charge per second.

Electric Charge Types

There are two types of electric charges: positive and negative.

Charge Carriers

The charge of a single negative electric charge is -1.6 × 10⁻¹⁹ C.
To find total electric charge (Q) based on the number of charges (n), use the formula Q = ne, with e being -1.6 × 10⁻¹⁹.
One coulomb of charge is constituted by approximately 6 × 10¹⁸ charge carriers.

Electric Potential

Electric potential is the work needed to move a unit charge from one point to another within an electric field.
The formula for electric potential (V) is V = W/Q, where W is work done and Q is charge.

Charge Potential

Positive charges are considered to have a higher potential compared to negative charges.

Potential Difference Measurement

The SI unit of potential difference is joule/coulomb, commonly referred to as a volt (V).
A voltmeter measures potential difference and is connected in parallel to the circuit for accurate readings.

Instrument Ranges

The typical range for an ammeter is 2 A.
The range for a voltmeter is typically 10 V, allowing for a measurement of potential difference between points in a circuit.

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Description

Explore essential terminology in electricity with this set of flashcards designed for Class 10 students. Each card features a key term along with its definition to help reinforce your understanding of electric current, circuits, and more. Perfect for quick revisions and test preparations.