Please help me....as my exams are gonna start....
Answers
Answer:
here is your answer hope it helps ☺️
Explanation:
define
1 = An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume.[1]:2[2]:622 The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes. In a electrolyte the charge carriers are ions, while in plasma, an ionized gas, they are ions and electrons
2 = Magnetic Effect of Electric Current – A magnetic field is a force field that is created by magnetic dipoles and moving electric charges, and it exerts a force on other nearby moving charges and magnetic dipoles. Magnetic Field is a vector quantity because it has both magnitude and direction.
3 = Conductance is the extrinsic property, whereas the inherent property is conductivity. This suggests that conductance is an object's property depending on its quantity/mass or physical form and scale, whereas conductivity is the object's intrinsic property of the substance.
q 2 = In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current.
what are advantages of mcb over electric fuse.
= MCBs are more sensitive to current than fuses. They immediately detect any abnormality and switch off the electrical circuit automatically. This prevents any permanent damage to electrical appliances and human beings. The MCB detects any excess current and breaks the circuit
describe an experiment to show the magnetic effect of electric current
= A plotting compass M is placed under the wire AB. The two ends of the wire are connected to a battery through a switch. ... Thus, the deflection of compass needle by the current carrying wire shows that magnetic field is associated with an electric current.
name some appliances which work on heating effect of electric current
= Domestic appliances based on the heating effect of electric current:
°Electric Iron.
°Electric heater.
°Electric geyser.
°Induction Cooker.
°Microwave Oven.
° Hair blower.