12) Explain series combination of resister
13) Define linear charge density surface charge density, volume
charge density and state its S.J. unit
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Answers
(12) In series circuit electrons travel only in one path. Here the current will be the same which passes through each resistor. The voltage across resistor in a series connection will be different. In series connection if one resistor is broken or any fault occurs, the entire circuit is turned off. Series circuits do not overheat easily. The design of series circuit is simple compared to parallel circuits.
Some Christmas tree lights can be in series circuits. If one bulb goes off the entire string goes out. The fuse or the breakers will be connected in series to protect the whole wiring from over current. It can be used as a voltage divider. Batteries in a remote are connected in series.
(13) ◆LINEAR CHARGE DENSITY=Linear charge density is the measure of a quantity of any characteristic value per unit of length.
◆SURFACE CHARGE DENSITY=Surface charge density is amount per unit surface area (circle) with outward unit normal.
◆VOLUME CHARGE DENSITY=Volume charge density is the quantity of charge per unit volume.