 ## Electricity Class 10th Question Bank

### What is electric current?

Electric current is the flow of electric charge through a conductor.

### What is the unit of electric current?

The unit of electric current is the ampere (A).

### What is the difference between an electric conductor and an insulator?

An electric conductor is a material that allows electric charge to pass through it, while an insulator is a material that does not allow electric charge to pass through it.

### What is resistance?

Resistance is the measure of opposition to the flow of electric current in a conductor.

### What is Ohm’s law?

Ohm’s law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points, provided the temperature and other physical conditions remain constant.

### What is a circuit diagram?

A circuit diagram is a graphical representation of an electric circuit, showing the components and their connections.

### What is the difference between a series circuit and a parallel circuit?

In a series circuit, the components are connected one after the other, so that the same current flows through each component. In a parallel circuit, the components are connected in parallel branches, so that the current is divided among them.

### What is a fuse?

A fuse is a safety device that breaks the circuit when the current flowing through it exceeds a certain limit, thus protecting the other components from damage.

### What is an electric motor?

An electric motor is a device that converts electrical energy into mechanical energy.

### What is an electric generator?

An electric generator is a device that converts mechanical energy into electrical energy.

### What is an electric cell?

An electric cell is a device that converts chemical energy into electrical energy.

### What is the difference between a primary cell and a secondary cell?

A primary cell cannot be recharged, while a secondary cell can be recharged.

### What is an electric circuit?

An electric circuit is a closed path through which electric current can flow.

### What is the direction of flow of electric current?

The direction of flow of electric current is from the positive terminal of the battery to the negative terminal.

### What is a potential difference?

Potential difference is the difference in electric potential between two points in an electric circuit.

### What is the unit of potential difference?

The unit of potential difference is the volt (V).

### What is the relationship between electric power, current, and voltage?

Electric power is equal to the product of current and voltage.

### What is the unit of electric power?

The unit of electric power is the watt (W).

### What is an electric circuit breaker?

An electric circuit breaker is a safety device that automatically breaks the circuit when the current flowing through it exceeds a certain limit, thus protecting the other components from damage.

### What is an electric switch?

An electric switch is a device that is used to open or close an electric circuit.

### What is the difference between direct current (DC) and alternating current (AC)?

Direct current flows in one direction only, while alternating current changes direction periodically.

### What is an electromagnet?

An electromagnet is a type of magnet that is created when an electric current flows through a coil of wire, producing a magnetic field.

### What is the role of an earth wire in an electrical circuit?

The earth wire provides a path for the current to flow safely to the ground, in case of a fault or short circuit.

### What is the function of a capacitor in an electric circuit?

A capacitor stores electrical energy and releases it when required, smoothing out fluctuations in voltage.

### What is the difference between a primary cell and a secondary cell?

A primary cell is a non-rechargeable cell that cannot be recharged, while a secondary cell is a rechargeable cell that can be recharged and used multiple times.

### What is the principle behind the working of an electric bell?

An electric bell works on the principle of an electromagnet. When an electric current is passed through a coil of wire, it creates a magnetic field that attracts a metal strip, causing a clapper to strike a bell.

### What is the difference between power and energy?

Power is the rate at which energy is consumed or produced, while energy is the capacity to do work.

### What is the effect of increasing the resistance in a circuit?

Increasing the resistance in a circuit reduces the flow of electric current.

### What is the difference between a voltmeter and an ammeter?

A voltmeter measures the voltage across a component in an electric circuit, while an ammeter measures the current flowing through a component.

### What is the role of a transformer in an electric circuit?

A transformer is used to change the voltage of an alternating current, either increasing or decreasing it depending on the application.

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