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Answer:
...which ques....??......
Explanation:
ques 48). A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones, and electric cars. When a battery is supplying electric power, its positive terminal is the cathode and its negative terminal is the anode.
Answer:
34) There are two types of electric charge: positive and negative (commonly carried by protons and electrons respectively). Like charges repel each other and unlike charges attract each other. An object with an absence of net charge is referred to as neutral.
35) The electron is a subatomic particle, symbol e⁻ or β⁻ , whose electric charge is negative one elementary charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure.
36) An electroscope is an early scientific instrument used to detect the presence of electric charge on a body. ... The pith-ball electroscope and the gold-leaf electroscope are two classical types of electroscope that are still used in physics education to demonstrate the principles of electrostatics.
37) An electric current is a flow of particles (electrons) flowing through wires and components. It is the rate of flow of charge. If the electric charge flows through a conductor, we say that there is an electric current in the conductor. In the circuits using metallic wires, electrons constitute a flow of charges.
38) An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. ... The SI unit of electric current is the ampere, or amp, which is the flow of electric charge across a surface at the rate of one coulomb per second.
39) A switch is a device in a computer network that connects other devices together. Multiple data cables are plugged into a switch to enable communication between different networked devices. ... Switches may also operate at higher layers of the OSI model, including the network layer and above.
40) When there are two or more electrical devices present in a circuit with an energy source, there are a couple of basic means by which to connect them. They can be connected in series or connected in parallel.
41) There are currently 15 types of domestic electrical outlet plugs in use worldwide, each of which has been assigned a letter by the US Department of Commerce International Trade Administration (ITA), starting with A and moving through the alphabet.
42) Bulk oil circuit breaker or BOCB is such types of circuit breakers where oil is used as arc quenching media as well as insulating media between current carrying contacts and earthed parts of the breaker. The oil used here is same as transformer insulating oil.
43) The electromotive force of each cell is i 07 volts and the resistance 3 ohms.
44) According to Coulomb, the electric force for charges at rest has the following properties: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.
45) If the charged particle is initially at rest in an electric field, it will move along the electric lines of force. But when the initial velocity of charged particle makes some angle with the lines of force then the resultant with the lines of force then the resultant path is not along the line of force. Because electric lines of force may not coincide with the line of velocity of the charge.
46) The conductor and insulator are the types of material. One of the major difference between the conductor and insulator is that the conductor allows the energy (i.e., current or heat ) to pass through it, whereas the insulator does not allow the energy to pass through it.
47) Two sources provide more than 99 percent of the power for our civilization: solar and nuclear. Every other significant energy source is a form of one of these two.
48) A battery is a device consisting of one or more electrochemical cells with external connections for powering electrical devices such as flashlights, mobile phones, and electric cars. When a battery is supplying electric power, its positive terminal is the cathode and its negative terminal is the anode.
49) In electricity generation, a generator is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit. ... Generators provide nearly all of the power for electric power grids.
50) Kilowatt-hour is an energy unit (symbol kWh or kW⋅h). One kilowatt-hour is defined as the energy consumed by power consumption of 1kW during 1 hour: 1 kWh = 1kW ⋅ 1h. One kilowatt-hour is equal to 3.6⋅106 joules: 1 kWh = 3.6⋅106 J.
51) Fuse is a piece of wire of a material with a very low melting point. When a high current flows through the circuit due to overloading or short circuit, the wires gets heated and melts. As a result, the circuit is broken and current stops flowing
52) When an electrical current passes through a solution (often of electrolytes), a cation or neutral molecule gets reduced at the cathode, and an anion or neutral molecule gets oxidized at the anode.
Explanation: