1) An ammeter and a voltmeter of resistance R are connected in series to an electric cell of negligible internal resistance. Their readings are A and V respectively. If another resistance R is connected in parallel with the voltmeter, then A) both A and V will increases B) both A and V will decrease C) A will decrease and V will increase D) A will increase and V will decrease Answer: Option DExplanation: The effective resistance will decrease when resistance R is connected in parallel with a voltmeter According to Ohm's law , $V=IR$, or $R=\frac{V}{I}$ Here, as R decreases, so V decreases and I should increase
