Question

reas
PHYSICS
What are the advantages of connecting electrical devices in parallel with
Instead of connecting them in series?
ing electrical devices in parallel with the battery
2- Why does the cord of an electric heater not glow while the heating
lectric heater not glow while the heating element does?
3- An electric motor takes 5A from a 220 V line. Determine the power and energy
Consumed in 2h.
4- Two lamps are rated 100 W, 220 V and the other rated 60 W, 220 V ar
00w, 220 V and the other rated 60 W, 220 V are connected in parallel to electric
mains supply. What current is drawn from the line, if the supply voltage
is 220 V?
a household electric circuit different appliances are connected in parallel to one another. Give two
wils. An electrician puts a fuse of rating 5 A in that part of domestic electrical circuit in which an
electrical heater of rating 1.5 kw, 220 V is operating. What is likely to happen in this case and why? What
change, if any, needs to be made?
6- You are given three resistors of 10 ohm, 10 ohm. 20 ohm to a battery of emf 2.5 V a key, an ammeter
and a voltmeter. Draw a circuit diagram showing the correct connection of a iven components such that the
voltmeter gives a reading of 2.0 V.
7- The applied potential difference across a given resistor is altered so that the heat produced per second
increase by a factor of 16. By what factor the applied potential difference changes?
8- What is the cause of resistance?
9- Calculate the area of cross section of a wire, if its length is 1.0 m, its resistance is 23 ohm and the
resistivity of the material of the wire is 1.84 x 10 ohm m.
10- (i) What is the nature of magnetic field produced by a straight current carrying conductor? Explain with
the help of an experiment.
(ii) - Draw a schematic diagram of a common domestic circuit showing live wire, neutral wire and the earth
ir. List four characteristic features of circuit used in residential building,​

Answer 1

Answer:

so lengdy question I think you should solve it with yourself