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Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A? -CBSE Physics 1 Answer 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? -CBSE Physics 1 AnswerA hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases? -CBSE Physics 1 AnswerAn electric lamp of 100 Ω, a toaster of resistance 50 Ω, and a water filter of resistance 500 Ω are connected in parallel to a 220 V source. What is the resistance of an electric iron connected to the same source that takes as much current as a1 Answer Mark True or False for following statements: (Science-Ncert class 6)1 AnswerWhy is tungsten used almost exclusively for filament of electric lamps? - CBSE physics class 101 AnswerIn a household electric circuit different appliances are connected in parallel to one another. Give two reasons. 2009 CBSE Physic class 101 AnswerA current of 0.5 A is drawn by a filament of an electric bulb for 10 minutes. Find the amount of electric charge that flows through the circuit. -CBSE Physics1 AnswerAn electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb? -CBSE Physics 1 AnswerWhy is the tungsten used almost exclusively for filament of electric lamps?. -CBSE Physics 1 AnswerA household uses the following electric appliances -CBSE physics class 101 AnswerAn electric refrigerator rated 400 W operates 8 hour/day. What is the cost of the energy to operate it for 30 days at Rs 3.00 per kW h? -CBSE Physics 1 AnswerAn electric motor takes 5 A from a 220 V line. Determine the power of the motor and the energy consumed in 2 h. -CBSE Physics 1 AnswerAn electric iron consumes energy at a rate of 840 W when heating is at the maximum rate and 360 W when the heating is at the minimum. The voltage is 220 V. What are the current and the resistance in each case? -CBSE Physics 1 AnswerWhy is an alternating current considered to be advantageous over direct current for long range transmission of electric energy? -CBSE physics class 101 AnswerWhy are coils of electric toasters and electric irons made of an alloy rather than a pure metal? -CBSE Physics 1 AnswerWhy are the conductors of electric heating devices, such as bread-toasters and electric irons, made of an alloy rather than a pure metal?. -CBSE Physics 1 AnswerFill in the blanks. cbse-class8-physics-20151 AnswerAn electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s. -CBSE Physics 1 AnswerThe path through which electric current flows: a) Plastic b) Cloth c) Iron d) Glass -NCERT CBSE CLASS 6TH SCIENCE 20161 Answer