Which of the following statements about a straight curren...
Which of the following statements about a straight current-carrying wire placed in a uniform magnetic field is correct? The wire experiences ---------------
maximum motor force if the current reverses its direction
no motor force of it is parallel to the field
no motor force if it is perpendicular to the field
a motor force with constant direction if either the current or the magnetic field is reversed
Correct answer is B
The greatest force is experienced when the conductor is at right angle to the field.
I.e at perpendicular or Ø = 90°
A moving-coil meter with an internal resistance of 100Ω has a full-scale deflection when a cur...
The knowledge of surface tension is applied in the following areas except in ...
A freshly demagnetized bar magnet is placed in the East-West direction to ensure that ...
When an electron jumps directly from an orbit of n = 4 to n = 2, ...
The total area under a force-velocity graph represents ...
In an experiment in which molten naphthalene is allowed to cool, the cooling curve i n the figu...
Two identical cells each of e.m.f 2v and internal resistance 1.0Ω are connected in parallel...