BITSAT SERIES Physics
Magnetic Force
5 previous year questions.
Volume: 5 Ques
Yield: Medium
High-Yield Trend
1
2025 2
2017 2
2005 Chapter Questions 5 MCQs
01
PYQ 2005
easy
physics ID: bitsat-2
Electron of mass and charge is travelling with a speed along a circular path of radius at right angles to a uniform magnetic field of intensity . If the speed of the electron is doubled and the magnetic field is halved the resulting path would have a radius:
1
2
3
4
02
PYQ 2005
medium
physics ID: bitsat-2
An electron moves at right angle to a magnetic field of with a speed of . If the specific charge of the electron is . The radius of the circular nath will he
1
2.9 cm
2
3.9 cm
3
2.35 cm
4
2 cm
03
PYQ 2017
easy
physics ID: bitsat-2
A charged particle moves through a magnetic field perpendicular to its direction, then
1
kinetic energy changes but the momentum is constant
2
the linear momentum changes but the kinetic energy is constant
3
both momentum and kinetic energy of the particle are not constant
4
both momentum and kinetic energy of the particle are constant
04
PYQ 2017
medium
physics ID: bitsat-2
Two very long, straight, parallel wires carry steady currents and respectively. The distance between the wires is . At a certain instant of time, a point charge is at a point equidistant from the two wires, in the plane of the wires. Its instantaneous velocity perpendicular to this plane. The magnitude of the force due to the magnetic field acting on the charge at this instant is
1
2
3
4
05
PYQ 2025
easy
physics ID: bitsat-2
A proton enters a uniform magnetic field with velocity . The magnitude of the magnetic force on the proton is:
1
N
2
N
3
N
4
0