Raju has two batteries. One is a battery and the one is a regular pencil cell. Each battery has a and noted on it as shown. How can Raju connect the two batteries together in a simple circuit?
Important Questions on Chemical Effects of Electric Current
A switch controls whether electricity flows in a circuit or not. When a switch is in OFF condition, no current flows through the circuit. When a switch is in ON condition, current flows through the circuit.
In the figure given below, S1, S2, S3 and S4 are switches. Under what case will the bulb glow?
Rekha was travelling in a diesel train. She wanted to charge her mobile phone. A train with a diesel engine is not connected to any external source of electricity while it is moving. What is the MAIN source of the electricity on which the fans and lights in the coaches run?
A large number of solar cells are joined together to form a solar panel. In the solar panel shown here, one form of energy is converted into another form of energy.
An example of a device in which the energy conversion is opposite to that of the solar panel is
A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.
Your task is to generate electricity through a chemical reaction. Which among the following groups would you use?
A coil is wrapped loosely around a cylindrical wooden piece and its ends are connected to a battery as shown. In which case will the compass needle placed near the coil deflect when the circuit is closed?
Given below is a diagrammatic representation of an electromagnet. The strength of the magnetic field between the poles of the electromagnet would be UNCHANGED if the
The figure shows a person holding a polythene strip after it has been rubbed with a duster cloth. The strip acquires a negative charge. Yet, after a few seconds, the duster cloth does not show any charge. Which of the following could be the reason for this?
The following experiment was conducted in the physics laboratory. A wooden pencil is sharpened at both ends. It is connected to two bulbs and a battery as shown. The two crocodile clips are connected to the wooden part of the pencil.
Students noticed that the bulbs do not light up. Why do the two bulbs not light up?
