Moving Charges and Magnetism questions
775 published questions with worked solutions.
- A long, straight wire of radius a carries a current distributed uniformly over its cross-section. The ratio of the magnetic...
- A galvanometer coil has 500 turns and each turn has an average area of 3 10^ -4 m ^2. If a torque of 1.5 Nm is required to keep...
- A moving coil galvanometer has 100 turns and each turn has an area of 2.0 cm^2. The magnetic field produced by the magnet is 0.01...
- A galvanometer has a resistance of 50 Ω and it allows maximum current of 5 mA. It can be converted into voltmeter to measure upto...
- A regular polygon of 6 sides is formed by bending a wire of length 4π meter. If an electric current of 4 3 A is flowing through...
- An electron is projected with uniform velocity along the axis inside a current carrying long solenoid. Then:
- In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The...
- A 2A current carrying straight metal wire of resistance 1Ω, resistivity 2 × 10^ -6 Ωm, area of cross –section 10 mm^2 and mass...
- A galvanometer of resistance 100 Ω when connected in series with 400 Ω measures a voltage of upto 10 V. The value of resistance...
- The electrostatic force ( F_1) and magnetic force ( F_2) acting on a charge q moving with velocity v can be written:
- A solenoid of length 0.5 m has a radius of 1 cm and is made up of 'm' number of turns. It carries a current of 5A. If the...
- A circular coil having 200 turns, 2.5 × 10⁻⁴ m² area and carrying 100 A current is placed in a uniform magnetic field of 1 T....
- Proton with kinetic energy of 1 MeV moves from south to north. It gets an acceleration of 10^ 12 m/ s ^2 by an applied magnetic...
- A galvanometer having a coil resistance 100 gives a full scale deflection when a current of 1 mA is passed through it. What is...
- A coil having 100 turns, area of 5 × 10⁻³ m², carrying current of 1 mA is placed in uniform magnetic field of 0.20 T such a way...
- A beam of protons with speed 4 10^5 ms ^ -1 enters a uniform magnetic field of 0.3 T at an angle of 60° to the magnetic field....
- Magnitude of magnetic field (in SI units) at the centre of a hexagonal shape coil of side 10 cm, 50 turns and carrying current I...
- A charged particle carrying charge 1 is moving with velocity (2 i +3 j +4 k ) m/s. If an external magnetic field of (5 i +3 j -6...
- An electron with kinetic energy 5 eV enters a region of uniform magnetic field of 3 μT perpendicular to its direction. An...
- The coercivity of a magnet is 5 × 10³ A/m. The amount of current required to be passed in a solenoid of length 30 cm and the...
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