A galvanometer of resistance 5.0Ω has full-sca...
A galvanometer of resistance 5.0Ω has full-scale deflection for a current of 100mA. How would its range be extended to 1.0A? By placing a resistance of
59Ω in parallel
95Ω in series
45Ω in parallel
45Ω in series
95Ω in parallel
Correct answer is A
Given Data:
Ig = 100ma = 0.1A
Rg=5
where Is = I - Ig → 1 - 0.1
Is = 0.9
IgRg = IsRs
0.1 * 5 = 0.9 * Rs
Rs = 0.1∗50.9
Rs = 59
Which of the following is/are necessary for the production of interference with two wave trains? ...
Mercury is commonly used as a thermometric fluid rather than water because ...
A vector quantity can only be completely described when ……… and …………are mentioned....
The radioisotope 23592U decays by emitting two alpha particles, three beta particles and...