Class 10th Science Chapter 12 | Exercise Questions (Q14, Q15, Q16, Q17, Q18) | Electricity | NCERT
Back exercise solutions of electricity. If you like our work, then you can donate us :-) Google Pay (G- Pay) : 8901108647 This video contains solution of exercise solutions Question 14, 15, 16, 17, 18 of class 10th science physics chapter 12 (Electricity) If you want to view a particular question in this video then click on the respective time stamps given below. Time Stamps : Question 14 : 00:00 Question 15 : 05:54 Question 16 : 08:22 Question 17 : 11:58 Question 18 : 14:51 Questions : 14. Compare the power used in the 2 Ω resistor in each of the following circuits: (i) a 6 V battery in series with 1 Ω and 2 Ω resistors, and (ii) a 4 V battery in parallel with 12 Ω and 2 Ω resistors. 15. Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are connected in parallel to electric mains supply. What current is drawn from the line if the supply voltage is 220 V? 16. Which uses more energy, a 250 W TV set in 1 hr, or a 1200 W toaster in 10 minutes? 17. An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater. 18. Explain the following. (a) Why is the tungsten used almost exclusively for filament of electric lamps? (b) Why are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal? (c) Why is the series arrangement not used for domestic circuits? (d) How does the resistance of a wire vary with its area of cross-section? (e) Why are copper and aluminium wires usually employed for electricity transmission? Class 10 Science Chapter 12 Electricity #class10science #electricity #class10 #science #class10sciencechapter12 #class10physics #ignitedminds Chapter 12 (Electricity) Lectures Playlist: • Electricity | Class 10th Science Lectures ... LIKE ➡ SHARE ➡ SUBSCRIBE / ignitedmindsandfuture E-MAIL - [email protected] About: - Ignited Minds started with a vision to enable e-learners to have plethora of knowledge available freely with them. The mission is to contribute knowledge and experiences to society in the form of videos.
