Khelo dimag se......

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