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Electric field exert force on

We know that force exerted by electric field is given by,F = q ESo, electric field exert force on charged particles when they are in a state of... View Article

In a cyclotron, which field required for the charged particle to move in a circle?

In a cyclotron, due to both electric and magnetic field the charged particle to move in a circle.Electric field exert force on... View Article

When a charged particle enters a magnetic field in a direction perpendicular to the field, which one of the following does not change? (A) Kinetic energy (B) Velocity (C) Force (D) Momentum

Option (a) Kinetic energy When a charged particle enters a magnetic field in a direction perpendicular to the field, then the kinetic energy of... View Article

Two straight horizontal parallel wires are carrying the same current in same direction, d is the distance between the wires. You are provided with a small freely suspended magnetic needle. At which of the following positions will the orientation of the needle be independent of the magnitude of current in the wires?

Option (a) At a distance d/2 from any of the wires, the orientation of the needle be independent of the magnitude of current in the wires; since... View Article

In two current carrying conductors parallel currents , anti parallel currents _

In two current carrying conductors parallel currents ATTRACT , anti parallel currents REPEL .... View Article

We use _________ to find the direction of force when two current carrying conductors are kept parallel to each other.

We use Fleming's Left Hand Rule to find the direction of force when two current carrying conductors are kept parallel to each other.... View Article

What limits the energy that can be imparted to a charge particle in a cyclotron?

Variation in the mass with the velocity limits the energy that can be imparted to a charged particle in a cyclotron. Due to the small mass, the... View Article

One Ampere is the current which when flowing through each of the two parallel uniform long linear conductors placed in free space at a distance of one meter from each other will attract or repel each other with a force of

One Ampere is the current which when flowing through each of the two parallel uniform long linear conductors placed in free space at a distance... View Article

An electron and proton enter a magnetic field with equal velocities. Which one of them experiences a greater force?

F = q(v x B) and both the particles have equal magnitude of charge and velocity.... View Article

A straight conductor carrying current I is split into circular loop as shown in figure a , the magnetic induction at the center of the circular loop is

The magnetic field at the center O due to the upper side of the semicircular current loop is equal and opposite to that due to the lower side of... View Article

What happen when two streams of electron move parallel to each other in the same direction?

Equivalent to currents in same direction. They repel each other.... View Article

Ampere’s circuital law is analogous to a law in electrostatics.That law is

Ampere’s circuital law is analogous to a Gauss’s law in electrostatics.... View Article

There is current carrying coil.In which form the energy will be stored in the coil?

When there is current carrying coil , then the energy will be stored in the coil in the form of magnetic field.... View Article

Which of the following phenomena takes place inside an optical fiber ?

Total Internal Reflection takes place inside an optical fiber.... View Article

If a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be

As the current inside the pipe is zero.Therefore the magnetic field associated with the current will be only outside the pipe.... View Article

Equipotential surfaces cannot____________

Answer: Equipotential surfaces cannot intersect. If equipotential surfaces intersect at that point then electric field lines will also... View Article

The shape of equipotential surface for an infinite line charge is:

The shape of equipotential surface for an infinite line charge is coaxial cylindrical.... View Article

For any charge configuration, equipotential surface through a point is _____to the electric field at that point.

Equipotential surface is always perpendicular to the electric fieldbecause work done is moving a charge along an equipotential surface is... View Article

Optical analogue of an equipotential surface is

Wavefronts are surfaces of constant phase. Similarly, equipotential surface due to point charge is spherical in shape and has same potential at... View Article

The displacement of charges inside the dielectric stops when

The displacement of charges inside the dielectric stops when the external force on the charges of the molecules is balanced by the force due to... View Article

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