☰
Moving Charges And Magnetism
A galvanometer can be changed into an ammeter by using
low resistance shunt in series
low resistance shunt in parallel
high resistance shunt in series
high resistance shunt in parallel
B.
low resistance shunt in parallel
A galvanometer can be converted to ammeter by connecting a low resistance ( called shunt resistance) in parallel to the galvanometer. If resistance is connected in parallel, then some of the current will flow through resistance.
Sponsor Area
Two moving coil meters, M1 and M2 have the following particulars:
R1 = 10 Ω N1 = 30,
A1 = 3.6 x 10–3 m2, B1 = 0.25 T
R2 = 14 Ω; N2 = 42,
A2 = 1.8 x 10–3 m2, B2 = 0.50 T
(The spring constants k are identical for the two meters).
Determine the ratio of (a) current sensitivity and (b) voltage sensitivity of M2 and M1.
Sponsor Area
Sponsor Area