Describe a simple experiment to show that the bulb lights up when an electric circuit is complete and vice-versa. Open Answer »
How does the magnetic effect of electric current help in the working of an electric bell? Explain with the help of a diagram. Open Answer »
Paheli took a wire of length 10 cm. Boojho took a wire of 5 cm of the same material and thickness. Both of them connected the wires as shown in the circuit given in figure. The current flowing in both the circuits is the same. a. Will the heat produced in both the cases be equal? Explain. b. Will the heat produced be the same if the wires taken by them are of equal lengths but of different thickness? Explain. Open Answer »