the height of mercury in the tube of a simple barometer is found to be 750mmHg. Calculate the atmospheric pressure in nm. take density of mercury as 13600kgm​

the answer is b ) square root of 5

option number c is the right answer.

490 n

f=125n a=2.5m/s2

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.