CBSE NCERT Notes Class 7 Physics Electric Current and its Effects. An electric current is a flow of electric charge. This electric charge is carried by moving electrons(charge carriers) in a wire. … Electric current is measured using a device called an Ammeter.
What is electric current answer?
An electric current is a flow of particles (electrons) flowing through wires and components. It is the rate of flow of charge. If the electric charge flows through a conductor, we say that there is an electric current in the conductor. In the circuits using metallic wires, electrons constitute a flow of charges.
What is electric current in short?
An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.
What is electric current and circuit class 7?
An electric circuit is a path in which electrons (or current) flow. If the circuit is incomplete or broken, the current doesn’t flow.
What is electric circuit for Class 7th?
An electric circuit can be defined as a closed path through which electric current can flow. Various components such as battery, resistor, wire, key, bulb etc. can be connected in different ways to construct an electric circuit.
What is electricity 7th class?
It is electricity!
Electricity is a form of energy produced by charges. It is difficult to imagine our life without electricity. An electric circuit is closed path in which current flows. It comprises of electric components (cell or battery, bulb, switch, resistors).
What mean by electric circuit?
electric circuit, path for transmitting electric current. An electric circuit includes a device that gives energy to the charged particles constituting the current, such as a battery or a generator; devices that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.
What is electric current and circuit class 10?
Electric current is carried by moving electrons through a conductor. By convention, electric current flows in opposite direction to the movement of electrons. Electric Circuit: Electric circuit is a continuous and closed path of electric current. … Electric current is expressed by the rate of flow of electric charges.
What is electric current and its effect?
Lighting effect of electric current is used in bulbs, fluorescent tubes. … Electric bell works based on the principle of magnetic effect of electricity. Electromagnet. Wrap a wire around a soft iron piece (known as the core). When an electric current is passed through the wire, the iron piece behaves like a magnet.