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Worksheetselectric currects and its effects
Total questions: 21
Worksheet time: 9mins
what are the components of electric circuit
wire and led
wire, led and switch
battery,wire, switch and led
wire,battery,copper wire and switch
how many cells make up a battery
1 cell
2 or more cells
only 2 cells
4 cells
5 cells
in parallel batteries which should be connected
+ and +
- and -
+ and -
anyways
applainces which produce heat effect
laptop, computer and mobile phone only
all light emiting devices only
all electric devices
only room heaters, iron box and electric stove
which of them is not a component in circuit
what is the full form of MCB
mini circuit breaker
master circuit breaker
mini current breaker
master current breaker
how can the battery be connected in series connection ( 2 or more ways)
+ and +
- and -
+ and -
- and +
why is tungsen exslusively for electric bulb
it has high melting point
it is the only metal that conducts electricity for bulb
it can't be broken easily
it can be broken easily
how many times a fuse can be used
only 1 time
only 2 times
infinite times
only 5 times
what does fuse do when more current passes
it lets the current to the electrical device
it breaks the circuit
it gives less amount of current supply to the electrical device
it does not do anything
what does MCB do when more current flows
it lets the current
it trips and stops the current
it trips and lets the current
it does not trip and stop the current
it does not do anything
what is called open circuit
when the switch is on
a cirrcuit is always called an open circuit
when the switch is off
there is no term called open circuit
what is full form of CFL
compact fluid lamp
compact flourescent lamp
compact fluid light
it dosent have a full form
what mark should be seen before buyig an electrical applaince?
ISI mark
IAI mark
SIS mark
IIS mark
electro magnets are better than permanent magnets, why?
we can use them always
they can only be used when needed
they can attract all objects
they an always attract only plastic items
what is called a broken circuit
open circuit
closed circuit
a normal circuit
there is no term called broken circuit
who invented electro magnet
Hans Christian Oerstead
Issac Newton
Thomas Alva Edison
Albert Einstein
which is an example of applaince that runs with the help of electro magnet
all vehicles
electric bell
laptop
switch
state weather true or false
electromagnets are better than permanent magnets
true
false
state weather true or false
electric bulbs are better than CFLs
true
false
what kind of items will electromagnet attract
only plastic items
only metal items
only another electro magnet
any items
