In a TV tube, the electrons are accelerated from the rear to the front. What is the direction of the current?

What is direction of conventional current ?

In a TV tube the electron are accelerated by a potential difference of 10 kV. Then, their deBroglie wavelength is nearly-

An electron moves on a straight line path XY as shown. The abcd is a coil adjacent to the path of electron. What will be the direction of current, if any, induced in the coil ?

What is acceleration ? What is the direction ? Also gives its unit.

As shown in the following figure , the magnetic force is acting in the downward direction on the current - carrying wire placed in the magnetic field . What is the direction of the magnetic field ?

If a number of electrons pass through the cross-section of a conductor in time t, what is the electric current flowing through it?

Figure shows planar loops of different shapes moving out of or into a region of a magnetic field which is directed normal to the plane of the loop away from the reader. Determine the direction of induced current in each loop using Lenz's law.

A uniform magnetic field of 1.5 T exists in a cylindrical region of radius10.0 cm, its direction parallel to the axis along east to west. A wire carrying current of 7.0 A in the north to south direction passes through this region. What is the magnitude and direction of the force on the wire if, (a) the wire intersects the axis, (b) the wire is turned from N-S to northeast-northwest direction, (c) the wire in the N-S direction is lowered from the axis by a distance of 6.0 cm?

Solve the follwing example . A current through a horizontal power line flows in east to west direction . What is the direction of magnetic field at a point directly below it and at a point directly above it ?

A particle is moving in a circular orbit with a constant tangential acceleration. After a certain time t has elapsed after the beginning of motion, the between the total acceleration a and the direction along the radius r becomes equal to 45^(@) . What is the angular acceleration of the particle.