Physics-
General
Easy
Question
PQ is a uniform rod of length 
and mass m carrying current i and is suspended in uniform magnetic field of induction 
acting inward as shown in figure. The tension in each string is
The correct answer is:
Related Questions to study
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Two wires AO and OC carry currents i as shown in figure. One end of both the wires extends to infinity ÐAOC=a, the magnitude of magnetic field at a point P on the bisector of the two wires at a distance r from O is
Two wires AO and OC carry currents i as shown in figure. One end of both the wires extends to infinity ÐAOC=a, the magnitude of magnetic field at a point P on the bisector of the two wires at a distance r from O is
physics-General
physics-
A uniform conducting wire ABC has a mass of 10g. A current of 2A flows through it. the wire is kept in a uniform magnetic field B = 2T. The acceleration of the wire will be
A uniform conducting wire ABC has a mass of 10g. A current of 2A flows through it. the wire is kept in a uniform magnetic field B = 2T. The acceleration of the wire will be
physics-General
physics-
In the following figure a wire bent in the form of a regular polygon of n sides is inscribed in a circle of radius a. Net magnetic field at centre will be
In the following figure a wire bent in the form of a regular polygon of n sides is inscribed in a circle of radius a. Net magnetic field at centre will be
physics-General
physics-
Figure shows the cross-sectional view of the hollow cylindrical conductor with inner radius ‘R’ and outer radius ‘2R’. Cylinder is carrying uniformly distributed current along it’s axis. The magnetic induction at point ‘P’ at a distance 
from the axis of the cylinder will be
Figure shows the cross-sectional view of the hollow cylindrical conductor with inner radius ‘R’ and outer radius ‘2R’. Cylinder is carrying uniformly distributed current along it’s axis. The magnetic induction at point ‘P’ at a distance from the axis of the cylinder will be
physics-General
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In the given loop the magnetic field at the centre O is
In the given loop the magnetic field at the centre O is
physics-General
physics-
A cube made of wire of equal length is connected to a battery as shown in the figure. The magnetic field at the centre of the cube is
A cube made of wire of equal length is connected to a battery as shown in the figure. The magnetic field at the centre of the cube is
physics-General
physics-
The magnetic field at the centre of semicircle o in the figure is
The magnetic field at the centre of semicircle o in the figure is
physics-General
physics-
The wire shown in figure carries a current of 40A. If r=3.14cm the magnetic field at point p will be
The wire shown in figure carries a current of 40A. If r=3.14cm the magnetic field at point p will be
physics-General
physics-
The magnetic field at the centre of the coil in the figure shown below is (the wires crossing at P are insulated from each other)
The magnetic field at the centre of the coil in the figure shown below is (the wires crossing at P are insulated from each other)
physics-General
physics-
Wire-1 in fig is oriented along the Y-axis and carries a steady current I1 A rectangular circuit located to the right of the wire carries a current 
Find the force experienced by the top of the horizontal wire (wire-2) of the rectangular circuit.
Wire-1 in fig is oriented along the Y-axis and carries a steady current I1 A rectangular circuit located to the right of the wire carries a current Find the force experienced by the top of the horizontal wire (wire-2) of the rectangular circuit.
physics-General
physics-
A rectangular loop of wire of size 
cm carries a steady current of 2A. A straight long wire carrying 5A current is kept near the loop (as shown in fig) If the loop and the wire are coplanar, find the net force on the loop
A rectangular loop of wire of size cm carries a steady current of 2A. A straight long wire carrying 5A current is kept near the loop (as shown in fig) If the loop and the wire are coplanar, find the net force on the loop
physics-General
physics-
Two long parallel conductors are placed at right angles to a metre scale at the 2cm and 6 cm marks, as shown in the figure
They carry currents of 1 A and 3 A respectively. They will produce zero magnetic field at the (ignore the earth’s magnetic field)
Two long parallel conductors are placed at right angles to a metre scale at the 2cm and 6 cm marks, as shown in the figure
They carry currents of 1 A and 3 A respectively. They will produce zero magnetic field at the (ignore the earth’s magnetic field)
physics-General
physics-
A beam of mixture of 
particles and protons are accelerated through same potential difference before entering into the magnetic field of strength B. If 
is
A beam of mixture of particles and protons are accelerated through same potential difference before entering into the magnetic field of strength B. If is
physics-General
General
Is this quadrilateral a rhombus?
Is this quadrilateral a rhombus?
GeneralGeneral
General
Graph this equation:
Graph this equation:
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