Physics MCQs: Chapter 15 +16

1.     Which of the following works on torque on the current carrying conductor placed in magnetic field

a)     Galvanometer

b)    Ammeter

c)     Voltmeter

d)    All of these

2.     Self inductance of a coil depends upon

a)     Current flowing

b)    Number of turns per unit length

c)     Voltage produced

d)    All of these

3.     If the coil is wound on an iron core, the flux through it will be

a)     Decreases

b)    Becomes zero

c)     Remains the same

d)    Increase

1.d

2.b

3.d