Electricity measuring equipments Questions and Answers

Physics
Electricity measuring equipmentsA plug-in transformer supplies 9.00 V to a video game system.
(a) How many turns are in its secondary coil if its input voltage is 120 V and the primary coil has 383 turns?
(b) What is its input current when its output is 1.13 A?

Physics
Electricity measuring equipmentsA clamp on ammeter is clamped on all three wires of a 120 volt circuit that is drawing 9.68 amps. What will the ammeter read as the total amperage?
Select one:
a. 0 A
b. 4.84 A
c. 19.36 A
d. 21 A

Physics
Electricity measuring equipmentsIn working of moving coil galvanometer (select the correct alternatives)
Eddy current help in achieving equilibrium of coil faster.
Cylindrical soft iron core helps in make magnetic field radial & increasing strength of torque on coil.
Parallex error needs to minized while taking measurement.
Marking on scale are equally spaced for equal change in current.
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