Which of the following statements is incorrect? The sensitivity of a galvanometer which incorporates an optical lever arrangement may be increased by providing
A.
a larger number of turns in the coil
B.
a thinner suspension with a small torsional control
C.
a special alloy permanent magnet which gives a high magnetic flux
A landlord has eight 40W electric light bulbs, four 60W bulbs and two 100W bulb in his house. If he has all the points on for five hours daily and if N.E.P.A. charges 5k per unit, his bill for 30 days is
