Question

An ammeter and a voltmeter of resistance R connected in seires to an electric cell of negligible internal resistance. Their readings are A and V respecitvely. If another resistance R is connected in parallel with the voltmeter

Answer 1

Answer:

The effective resistance will decrease when resistance R is connected in parallel with the voltmeter.

According to Ohm's law, V=IR or, R=

I

V

Here, as R decreases, so V decrease and I should increase.