Electricity Quick check

QuizÂ by Nidhi Joshi Biyani

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5 questions

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- Q1An electric bulb rated for 500 W at 100V is used in a circuit so that the bulb delivers 500W is _____ ohms.100205040120s
- Q2A heater is designed to operate with a power of 1000W in a 100V line. It is connected in combination with a resistance of 10 ohms and a resistance R, to a 100V mains as shown in the figure. What will be the value of R so that the heater operates with a power of 62.5W?2.5 ohms10 ohms25 ohms5 ohms300s
- Q3What will be total resistance of the given circuit?5.66 ohms8.66 ohms33 ohms22 ohms120s
- Q4What will be the resistance of the circuit before and after the key is closed?3R/2, 5R/24R/3, 2R/53R/2, 4R/34R/3, 5R/260s
- Q5Equivalent resistance of the given circuit is 1.5 ohms then r is________ ohms.1.81.13.31.6120s