Magnetic Effects of Electric current

A heating producing device should be used in an electric circuit. This device should have

• high resistance and low melting point

• low resistance and high melting point

• high resistance and high melting point

• low resistance and low melting point

An electric generator converts

• Electrical energy into mechanical energy

• Mechanical energyinto electrical energy

• Electrical energy into chemical energy

• None

Tesla is the unit of

• Electric field

• Magnetic field

• Force per unit length

• Work per unit length

The best material to make permanenet magnets is

• Copper

• Soft iron

• Aluminium

• Alnico

The direction of induced current is given by

• Fleming's left hand rule

• Fleming's right hand rule

• Right hand thumb rule

• Left hand thumb rule

An A C generator converts

• Electrical energy into mechanical energy

• Mechanical energy into Electrical energy

• Generates energy

• None

Live wire has

• Red coloured insulation

• Black coloured insulation

• Green coloured insulation

• Pink coloured insulation

Switches are connected to

• Live wire

• Neutral wire

• Earth wire

• Any one

Fuse is connected in

• Live wire

• Neutral wire

• Earth wire

• Any wire

The use of fuse is

• to control the voltage

• to supply high current in case of overloading

• to supply high current in case of short circuit

• to stop the supply of current in case of overloading or short circuit