Answer:
When you place an object in front of a mirror, you see the same object in the mirror. This image that appears to be behind the mirror is called the image. The object is the source of the incident rays, and the image is formed by the reflected rays. An image formed by reflection may be real or virtual.
By definition we have to:
The electric current is the flow of electric charge due to the movement (usually of electrons) that a material travels.
Some properties are:
1) Electric conduction: The conductive materials have a large amount of free electrons, therefore, the passage of electricity is possible.
2) The current inside a circuit is directly proportional to the voltage and inversely proportional to the resistance of the circuit. This is what is known as ohm's law:
3) The current can be continuous or alternate.
Alternating current is the electric current in which the magnitude and direction vary cyclically.
The direct current is the flow of electric charges that does not change direction with time.
distance between sun and earth is 1 AU
now 1 light year is defined as distance covered by light in one year
so we will have
So 1 Ly is more than the distance between sun and earth
Explanation:
The direction of electric field is always tangential to field lines. However, free charged particles do not necessarily move alone the field lines. Curved field lines means that there is a continuous change of force on the charge and thus, its direction of acceleration would change accordingly. Moreover, if the charge is negative it is bound to move opposite to the field direction. Hence, we can say that although electric field is tangent to electric field lines, free charged particles do not necessarily move alone the field lines.