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A torch bulb is rated 2.5 V and 750 mA. Calculate (i) its power, (ii) its resistance and (iii) the energy consumed if this bulb is lighted for 4 hours. -2005 CBSE Physic class 101 AnswerWhich has a higher resistance : a 50 W lamp bulb or a 25 W lamp bulb and how many times ? -2005 CBSE Physic class 101 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 AnswerIn a drying experiment, the constant rate of drying is found to be 3.6 kg water m^-2h^-1. Dry bulb and wet bulb temperatures of the drying air are 75C and 37C, respectively. Latent heats of vapourization at the dry bulb and the wet bulb temperatures 1 Answer The supply voltage to a room is 120 V. The resistance of the lead wires is 6Ω. A 60 W bulb is already switched on. What is the decrease of voltage across the bulb, when a 240 W heater is switched on in parallel to the bulb ? - physics 20131 AnswerA battery lights a bulb. Describe the energy changes involved in the process. - Physics Cbse class 11 1 Answer When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to . cbse-class8-physics-20151 AnswerGive reasons why electric bulb fuses. NCERT SCIENCE CLASS 6TH CBSE 20171 AnswerWhat happens to the mercury, when the bulb of the thermometer comes in contact with a hot object?-NCERT SCIENCE CLASS 6TH CBSE 20172 AnswerA household uses the following electric appliances -CBSE physics class 101 AnswerAn electric iron has a rating of 750 W, 220 V. Calculate -2007 CBSE Physic class 101 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 AnswerClassify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous: (Science-Ncert class 6)1 Answer The electric power consumed by a device may be calculated by using either of the two expressions -CBSE physics class 101 AnswerChoose the correct answer :The Thin Wire that gives off light in the bulb is a) Electric Cell b) Filament c) Terminals d) None Of The Above -NCERT CBSE CLASS 6TH SCIENCE 20161 AnswerName a metal which offers higher resistance to the passage of electricity than copper. -2005 CBSE physics Class 101 AnswerAn 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. -CBSE Physics 1 AnswerA bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. 1 AnswerThe Pilling-Bedworth ratio is defined as: (-Gate metallurgical engineering 2014)1 AnswerAn electric lamp, whose resistance is 20 Ω, and a conductor of 4 Ω resistance are connected to a 6 V battery. Calculate (a) the total resistance of the circuit, (b) the current through the circuit, and (c) the potential difference acr1 Answer