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A 122mv, 12mA d’Arsonval movement is to be used in voltmeter whose full scale reading is 120v. The resistance inserted by 120v _____________(a) 1200Ω(b) 12000Ω(c) 1000Ω(d) 10,000ΩI got this question during an interview.The question is from Measuring Voltage and Current topic in chapter Simple Resistive Circuits of Electric Circuits

Answer»

The CORRECT OPTION is (d) 10,000Ω

Easiest EXPLANATION: R =120/12 * 10^-3

= 10,000Ω.



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