Q 17 (1+1+1+1+1) Answer any four sub-parts in these questions. i) A student set-ups an electrical circuit for verification of ohm's law. He c voltmeter reading gets in reverse direction. The student should: a) Get the voltmeter replaced. b) Decrease resistance with the help of rheostat. c) Reverse connections of voltmeter. d) Connect voltmeter in series. ii) Which of the following statements is not true regarding the electrical s verification of ohm's law ? a) The ammeter is connected in series circuit. b) Rheostat can only increase the resistance in electric circuit. c) The single key is used to switch on / off the electric circuit. d) The voltmeter is connected in parallel with the unknown resistanc iii) In an electrical circuit, ammeter reads 0.9 A.if another resistor of 2 oh series to the circuit ,the reading of the ammeter is : a) Likely to increase. b) Likely to be same. c) Likely to be infinite. d) Likely to decrease iv) While performing the experiment to study the dependence of current difference ,if the circuit that is used to measure current and voltage is time, then a) The ammeter's zero error will change. b) The resistor will get heated up changing the value of 'R'. c) The potential difference of the cell will change. d) The voltmeter will start giving wrong reading.
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it be 5
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