If the plane of the rectangular coil is parallel to the magnetic field (i.e radial magnetic field) the torque on the coil is_____________________? April 17, 2025 by admin A. τ = NIAB cosφ B. τ = NIAB sinφ C. τ = NIAB tanφ D. τ = NIAB
Magnetic flux and flux density are related by___________________? April 17, 2025 by admin A. magnetic flux = flux density / area B. magnetic flux = flux density x area C. flux density = magnetic flux area D. flux density = magnetic flux x area
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__________________? April 17, 2025 by admin A. a circle B. a spiral C. an ellipse D. helix
Value of permeability of free space in SI units is___________________? April 17, 2025 by admin A. 4πx10-9 WbA-1m-1 B. 4πx10-7 WbA-1m-1 C. 4πx10-10 WbA-1m-1 D. 4πx10-8 WbA-1m-1
The magnetic field strength of solenoid is__________________? April 17, 2025 by admin A. B = μNI B. B = μN/I C. B = μnI D. Both B and C
The deflection for 50 division of galvanometer is decreased to 25 divisions by shunt resistance of 12Ω. Galvanometer resistance is_____________? April 17, 2025 by admin A. 18Ω B. 30Ω C. 24Ω D. 12Ω
The sensitivity of a galvanometer is given by__________________? April 17, 2025 by admin A. C/BAN B. CAN/B C. BAN/C D. ABC/N
Minimum current required to produce a deflection of 1 mm on a scale at a distance of 1 meter is__________________? April 17, 2025 by admin A. 0.1 A B. 1:00 AM C. current sensitivity D. 1 m A
While measuring the unknown resistance the help of slide wire bridge a greatest accuracy can be achieved when__________________? April 17, 2025 by admin A. a most sensitive galvanometer is used B. a steady voltage cell is used C. the balance point is close to the middle of the wire D. a high resistance box is used in one of…
An ammeter measures the total current flowing through a circuit when it is connected__________________? April 17, 2025 by admin A. in series with the circuit B. in parallel with circuit C. in series with any of the parallel resistances in the circuit D. in parallel with any of the series resistances in…
