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WorksheetsKhelo dimag se......
Total questions: 10
Worksheet time: 4mins
I am a device who does not allow excessive current to flow through an electric circuit.
Voltmeter
ammeter
Fuse
Bulb
Name the material which is use in bulb's filament
Copper
Tungsten
Tin
Nichrome
Two resistance both of 6 ohm are connected in parallel.Calculate their equivalent resistance.
3 ohm
2 ohm
6 ohm
12 ohm
For metals and alloys of metal the resistivity
decreases with temperature
increase and then decrease with temperature
Remains constant
increase with temperature
An electric kettle is rated 500 W,220 V.It is used to heat water for 30 seconds.Assuming the voltage to be V, Calculate the heat produced.
20000 J
15000 J
21000 J
16000 J
I convert electrical energy to mechanical energy
Motor
generator
Fuse
Resistor
Fleming's Left hand rule is used to find
energy
magnetic field
force
current
To find the direction of induced current we use
Fleming's left hand rule
Fleming's right hand rule
Thumb rule
None of the above
when live wire and neutral wire comes in contact with each other is called
overloading
short circuit
fluctuation
Earthing
Color of live wire is
green
red
blue
black
