Question

Two identical moving coil galvanometers have 10 Ω resistance and full scale deflection at 2 μA current. One of them is converted into a voltmeter of 100 mV full scale reading and the other into an Ammeter of1mA full scale current using appropriate resistors. These are then used to measure the voltage and current
in the Ohm’s law experiment with R = 1000Ω resistor by using an ideal cell. Which of the following statement(s) is/are correct?
A. The measured value of R will be 978 Ω < R < 982 Ω
B. The resistance of the Voltmeter will be 100 kΩ
C. If the ideal cell is replaced by a cell having internal resistance of 5Ω then the measured value of R will be more than 1000 Ω
D. The resistance of the Ammeter will be 0.02Ω (round off to 2 nd decimal place)

Answer 1

Answer:

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