Moving Charges and Magnetism questions
775 published questions with worked solutions.
- This question has Statement-I and Statement-II. Of the four choices given after the statements, choose the one that best...
- A moving coil galvanometer of resistance 100 shows a full scale deflection for a current of 1 mA. The value of resistance...
- The magnetic field at the centre of a current carrying circular loop of radius R is 16 T. The magnetic field at a distance x= 3 R...
- A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section....
- An electron projected perpendicular to a uniform magnetic field B moves in a circle. If Bohr's quantization is applicable, then...
- A proton is moving undeflected in a region of crossed electric and magnetic fields at a constant speed of 2 10^5 ms^ -1 . When...
- A galvanometer having a coil of resistance 30 need 20 mA of current for full-scale deflection. If a maximum current of 3 A is to...
- Consider a moving coil galvanometer (MCG) : A : The torsional constant in moving coil galvanometer has dimensions [ML²T⁻²] B :...
- Assertion (A) : A electron in a certain region of uniform magnetic field is moving with constant velocity in a straight line...
- A tightly wound long solenoid carries a current of 1.5 A. An electron is executing uniform circular motion inside the solenoid...
- Consider a long straight wire of a circular cross-section (radius a) carrying a steady current I. The current is uniformly...
- The magnetic field inside a 200 turns solenoid of radius 10 cm is 2.9 × 10^ -4 Tesla. If the solenoid carries a current of 0.29...
- An electron with mass 'm' with an initial velocity (t = 0) v = v_0 i (v_0 > 0) enters a magnetic field B = B_0 j . If the initial...
- A magnetic dipole experiences a torque of 80 3 N m when placed in uniform magnetic field in such a way that dipole moment makes...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : If Oxygen ion...
- A 4.0 cm long straight wire carrying a current of 8 A is placed perpendicular to a uniform magnetic field of strength 0.15 T. The...
- A particle of charge 1.6 and mass 16 is present in a strong magnetic field of 6.28 T. The particle is then fired perpendicular to...
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :...
- The coercivity of a small magnet where the ferromagnet gets demagnetized is 3 10^3 A m^ -1 . The current required to be passed in...
- Two identical wires A and B, each of length 'ℓ', carry the same current I. Wire A is bent into a circle of radius R and wire B is...
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