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5 years ago Satkriti Roao class 10 electricity lakhmir singh Which effect of current is utilised in an electric light bulb? 5 years ago Satkriti Roao class 10 electricity lakhmir singh Name two effects produced by electric current. 5 years ago Satkriti Roao class 10 electricity lakhmir singh If the current passing through a conductor is doubled, what will be the change in heat produced? 5 years ago Satkriti Roao class 10 electricity lakhmir singh How does the heat H produced by a current passing through a fixed resistance wire depend on the magnitude of current I? 5 years ago Satkriti Roao class 10 electricity lakhmir singh Two exactly similar electric lamps are arranged (i) in parallel, and (ii) in series. If the parallel and series combination of lamps are connected to 220 V 5 years ago Satkriti Roao class 10 electricity lakhmir singh An electric bulb is rated as 10 W, 220 V. How many of these bulbs can be connected in parallel across the two wires of 220 V supply line if the maximum current which can be drawn is 5 A? 5 years ago Satkriti Roao class 10 electricity lakhmir singh A boy noted the readings on his home’s electricity meter on Sunday at 8 AM and again on Monday at 8 AM (see figure below). (a) What was the meter reading on Sunday? (b) What was the meter reading on Monday? 5 years ago Satkriti Roao class 10 electricity lakhmir singh The table below shows the current in three different electrical appliances when connected to the 240 V mains supply: 5 years ago Satkriti Roao class 10 electricity lakhmir singh State whether an electric heater will consume more electrical energy or less electrical energy per second when the length of its heating element is reduced. Give reasons for your answer. 5 years ago Satkriti Roao class 10 electricity lakhmir singh What is meant by “electric power”? Write the formula for electric power in terms of potential difference and current. (b) The diagram below shows a circuit containing a lamp L, a voltmeter and an ammeter. 5 years ago Satkriti Roao class 10 electricity lakhmir singh An electric fan runs from the 230 V mains. The current flowing through it is 0.4 A. At what rate is electrical energy transferred by the fan? 5 years ago Satkriti Roao class 10 electricity lakhmir singh What is the maximum power in kilowatts of the appliance that can be connected safely to a 13 A, 230 V mains socket? 5 years ago Satkriti Roao class 10 electricity lakhmir singh A 2 kW heater, a 200 W TV and three 100 W lamps are all switched on from 6m. to 10 p.m. What is the total cost at Rs. 5.50 per kWh? 5 years ago Satkriti Roao class 10 electricity lakhmir singh An electric kettle connected to the 230 V mains supply draws a current of 10 A. Calculate : (a) the power of the kettle. (b) the energy transferred in 1 minute. 5 years ago Satkriti Roao class 10 electricity lakhmir singh Two lamps, one rated 40 W at 220 V and the other 60 W at 220 V, are connected in parallel to the electric supply at 220 V. (a) Draw a circuit diagram to show the connections. 5 years ago Satkriti Roao class 10 electricity lakhmir singh Calculate 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. (ii) a 4 V battery in parallel with 12 Ω and 2 Ω resistors. 5 years ago Satkriti Roao class 10 electricity lakhmir singh Which uses more energy a 250 W TV set in 1 hour or a 1200 W toaster in 10 minutes? 5 years ago Satkriti Roao class 10 electricity lakhmir singh An electric motor takes 5 amperes current from a 220 volt supply line. Calculate the power of the motor and electrical energy consumed by it in 2. 5 years ago Satkriti Roao class 10 electricity lakhmir singh Page 4 / 5 Prev 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? 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