What is a depolariser and how does it work?
Important Questions on Electricity
Gourang made an electric circuit with three bulbs B1, B2, and B3, a cell, and two switches S1 and S2 as shown in the figure. He noted his observation when S1 is closed and S2 is open.
He also found that a bulb whose failure made the circuit open irrespective of the status of S1 and S2. What are his observations?
Gourang made an electric circuit with three bulbs B1, B2 , and B3, a cell, and two switches S1 and S2 as shown in the figure. He noted his observation when S2 is closed and S1 is open.
He also found that a bulb whose failure made the circuit open irrespective of the status of S1 and S2. What are his observations?
Saket was repairing an electric bell. By mistake, instead of an electromagnet, he placed a permanent magnet in the electric bell. Explain what changes do you observe.
Ravinder was inspired by reading the autobiography of Thomas Alva Edison and changed a portion of his room into a laboratory. In his laboratory he performed an activity that demonstrates both 'heating effect' and 'magnetic effect' of electric current. He connected different components with different wires and the connections are represented by the following circuit diagram.
To his disappointment, he was not successful in his effort. Observe the circuit and suggest modifications to make his effort successful.
Describe the electrostatic force that exists between A and B.
Describe the electrostatic force that exists between two metallic spheres A and B kept on an insulated surface.
Describe the electrostatic force that exists between two identical metallic spheres A and B kept on an insulated surface.
