If an ammeter is to be used in place of a voltmeter, the we must connect with the ammeter a
low resistance in parallel
high resistance in parallel
high resistance in series
ow resistance in series
If in a circular coil of radius , current is flowing and in another coil of radius a current is flowing, then the ratio of the magnetic fields, and , produced by them will be
If an electron and a proton having same momenta enter perpendicular to a magnetic field, then
curved path of electron and proton will be same ( ignoring the sense of revolution)
they will move undeflected
curved path of electron is more curved than that of the proton
path of proton is more curved.
If a current is passed through a spring then the spring will
none of these.
The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its