Home Physics Electromagnetism Test Online Preparation Mcqs Physics Electromagnetism Test Online Preparation Mcqs Physics Electromagnetism Test Online Preparation Mcqs With Answers Start Below 123456789101112131415Show paginator Hide paginator 7% Question 1 of 15 1. If the current passing through the a spring then the spring willA. ExpandB. CompressC. None of theseD. Remain sameQuestion 1 of 15 Loading... Question 2 of 15 2. The magnitude of force experienced by a stationary charged particle in a uniform magnetic field is ofA. ZeroB. MaximumC. vxBD. MinimumQuestion 2 of 15 Loading... Question 3 of 15 3. A moving coil galvanometer of resistance 100Ω gives half scale deflection for a current of 20mA. What will be the potential difference across it?A. 2 voltB. 4 voltC. 0.4 voltD. 5 voltQuestion 3 of 15 Loading... Question 4 of 15 4. When a particle of charge q and mass enters a uniform magnetic field B moving with a velocity v perpendicular to the direction for the field, it describes a circular path of radius _____A. R=mV/qBB. R=qmV/BC. R=qB/mVD. R=qmB/VQuestion 4 of 15 Loading... Question 5 of 15 5. Concave pole faces of the magnet and soft iron cylinder in galvanometer are used to make the fieldA. RadialB. WeakC. StrongD. Radial and strongerQuestion 5 of 15 Loading... Question 6 of 15 6. Coil of galvanometer is suspended in a radial magnetic field so that the deflecting torque on the coil is always ________, (in usual symbols)A. BINAB. BINA cosαC. BINA tanαD. BINA sinαQuestion 6 of 15 Loading... Question 7 of 15 7. The magnetic force experienced by a charge particle moving in a magnetic field will be minimum when it movesA. Perpendicular to the fieldB. Parallel to the fieldC. Inclined at some angle to the fieldD. Inclined at an angle at 45°Question 7 of 15 Loading... Question 8 of 15 8. A wheat stone bridge is said to be balanced when ________A. Potential difference across galvanometer branch is zeroB. Potential difference across galvanometer branch is maximumC. Maximum current flows through the galvanometerD. Minimum current flows through the galvanometerQuestion 8 of 15 Loading... Question 9 of 15 9. A particle of mass m charge q and speed V, enters a uniform magnetic field of flux density B. The path of the particle in the field is a circle of radius r. The radius r of the circle is:A. Directly proportional to mB. directly proportional to qC. directly proportional to BD. Independent mass mQuestion 9 of 15 Loading... Question 10 of 15 10. An electrons enters a region where the electric field E is perpendicular to the magnetic field B. It will suffer no deflection if _________.A. E = BVB. B = eE/VC. E = BeV/2D. E = BeVQuestion 10 of 15 Loading... Question 11 of 15 11. The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field, the orbit will be:A. An ellipseB. A circleC. A helixD. A spiralQuestion 11 of 15 Loading... Question 12 of 15 12. A magnetic field __________.A. Never exerts a force on a charged particleB. Exerts a force if the charged particle is moving in the direction of the magnetic field linesC. Always exerts a force on a charged particleD. Exerts a force if the charged particles is moving perpendicular to the magnetic field linesQuestion 12 of 15 Loading... Question 13 of 15 13. Value of permeability of free space in SI units is ________A. 4πx10-8WbA-1m-1B. 4πx10-7WbA-1m-1C. 4πx10-10WbA-1m-1D. 4πx10-9 WbA-1m-1Question 13 of 15 Loading... Question 14 of 15 14. A charged particle moving in a magnetic field experiences a resultant forceA. in the direction perpendicular to both the field and its motionB. in the opposite direction of fieldC. in the direction of fieldD. in the opposite direction to its motionQuestion 14 of 15 Loading... Question 15 of 15 15. Two parallel wires carrying currents in the opposite directions _________.A. Repel each otherB. Have no effect upon each otherC. They cancel out their individual magnetic fieldD. Attach each otherQuestion 15 of 15 Loading... Loading... Related Study Posts:MDCAT Test Physics Test Online PreparationASF Written Test Preparation Online McqsOnline ECAT Test Preparation McqsFPSC SST Test Preparation Mcqs OnlinePPSC Lecturer Test Preparation Online McqsTESCO Jobs Online NTS Test Preparation McqsLecturer Test KPPSC Preparation Mcqs OnlineFIA ASI Sub Inspectors Job 2024 OTS Test Preparation…SPSC SST Test Preparation Mcqs Online with SyllabusFPSC Test Preparation Mcqs Online Subject Wise