Wattless Current in an AC circuit is when the average power consumed in such circuit corresponds to Zero. Such current is also called as Idle... View Article
A LR circuit consists of an inductor and a resistor in it. Where the inductor is denoted by L an the resistance is denoted by R . This type of... View Article
a) The type of current used in household supply is AC current. b) The type of current given by a cell is DC current. Alternating current (AC)... View Article
Pressure is defined as force per unit area. The force applied to a unit area of surface; measured in pascals (SI unit). For example, when a... View Article
Absolute refractive index is the refractive index of a medium in vacuum. The refractive index of glass is 1.5. It means that the speed of light... View Article
Like poles repel each other and unlike poles attract. A magnetic force flows from the north pole to the south pole outside the magnet. When we... View Article
If the average acceleration is different between different points along its path, either in magnitude or in direction or both in magnitude and... View Article
The magnetic fields are constituted of point charges called electrons which are moving constantly circles around a conductor. These magnetic... View Article
The correct answer is (d) None of these The speed of light depends on the material medium in which it is moving. If the light is travelling... View Article
The International System (SI) unit of field intensity for magnetic fields is Tesla (T). One tesla (1 T) is defined as the field intensity... View Article
The rate of change of velocity is ACCELERATION. Like velocity, acceleration is a vector quantity and has both magnitude and direction. The... View Article
It uses this to calculate the force or pull of gravity of the planets in universe. It is also used in calculating the trajectory of astronomical... View Article
Voltmeter is the device used for measuring potential differences. Voltmeter is always connected in parallel to the resistance. The needle... View Article
Answer:Â (c) 60 vibrations per minute Hertz is the unit for frequency. Frequency is the number of cycles undergone during one unit of a time by a... View Article
Multiple reflection of sound is the sound which is reflected more than once. During reflection, sound waves obey the laws of reflections.Sound... View Article
The strength of a force is expressed by its magnitude. The magnitude of a force is expressed in the SI unit of force called Newton. 1 Newton can... View Article
A rain gauge (also known as an udometer, pluviometer, or an ombrometer) is a type of instrument used by meteorologists and hydrologists to gather... View Article
In a series combination the electric components are connected end to end along a same line or ;when two or more resistances are connected end to... View Article
