Electric Current and Its Effect

The magnitude of magnetism produced by an electric current in a wire depends upon- (a) Increases with an increase in the strength of electric current (b) Decreases, as the distance from the wire increases

• Both a, b

• Only a

• Only b

• None

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When current is switched 'on' of a bulb it converts _______ energy into _______ energy.

• Electrical, heat

• Electrical, light

• Electrical, mechanical

• Electrical, sound

When current is switched on in an electric bell, it converts _______ energy into _______ energy.

• Electrical, light

• Electrical, sound

• Electrical, heat

• Mechanical, sound

The filament of A bulb, is a wire of

• High resistivity, low melting point

• Low resistivity, low melting point

• High resistivity, high melting point

• Low resistivity, high melting point

Tags

NGSS.MS-PS3-3

The ____________ is the energy that flows from the battery, through the wire in it’s path through the circuit.

• Electric Current

• Conductor

• Electromagnet

• Insulator

An electric current always flows in a closed path, or loop.

• True

• False

A flow of electrons through a conductor is called:

• A river

• A spark

• An electron flow

• A current

Electricity that flows constantly in one direction on a given path.

• current electricity

• static electricity

• electron pathway

• conductor

The heating coils/elements of different electrical appliances are usually made from ________ or ________ wires.

• & 2

• & 4

• 2 & 4

• 3 & 4

Tags

NGSS.MS-PS3-4

When electric current flows through the metal filament of the bulb it gets heated to very high temperature and becomes______ hot and start emitting _______.

• White, light

• Red, light

• White, heat

• Red, heat

Tags

NGSS.MS-PS1-4