Moving Charges and Magnetism questions
775 published questions with worked solutions.
- A particle carrying a charge equal to 100 times the charge on an electron is rotating per second in a circular path of radius 0.8...
- Which of the following gives the value of magnetic field due to a small current element according to Biot-Savart's law?
- Magnetic field at a distance r from an infinitely long straight conductor carrying steady current varies as
- The strength of the magnetic field at a distance r near a long straight current carrying wire is B. The field at a distance r/2...
- Two parallel long wires carry currents i_1 and i_2 with i_1>i_2. When the currents are in the same direction, then the magnetic...
- The current is flowing in South direction along a power line. The direction of magnetic field above the power line (neglecting...
- Two infinitely long, thin, insulated, straight wires lie in the XY-plane along the X and Y-axes, respectively. Each wire carries...
- A horizontal overhead power line carries a current of 90 A in East to West direction. What are the magnitude and direction of the...
- A direct current i flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is
- The magnetic field produced at the centre of a current carrying circular coil of radius r, is
- A particle carrying a charge equal to 100 times the charge on an electron is rotating one rotation per second in a circular path...
- A current of 0.1 A circulates around a coil of 100 turns and having a radius equal to 5 cm. The magnetic field set up at the...
- Magnetic field due to a circular coil having n turns at a distance x on its axis is proportional to (if r = radius of ring)
- When an electron is kept in a strong magnetic field, then
- Magnetic field in a region is produced by
- A proton is projected with velocity v=2 i in a region, where magnetic field B=( i+3 j+4 k) , and electric field E=10 i /m, then...
- A proton enters a magnetic field of flux density 1.5 Wb ,m^ -2 with a velocity of 2 10^ 7 m ,s^ -1 at an angle of 30^ with the...
- If a particle of charge 10^ -12 C moving along the x-direction with a velocity 10^ 5 m ,s^ -1 experiences a force of 10^ -10 N in...
- The magnetic force on a charged particle moving in the field does no work, because
- A long, straight wire of radius a carries a steady current i. The current is uniformly distributed across its cross-section. The...
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