Why are rubber and plastic used in electrical appliances?

To insulate and prevent accidental electric shocks

To increase the efficiency of the electric circuit

a combination of cells in which cells are joined (+) to (-)

a combination of cells in which cells are joined (+) to (+)

Cell is a device which

electrical energy into light energy

converts chemical energy into electrical energy

electrical energy into magnetic energy

Why does an electric bulb glow in a circuit?

Because there is no electricity in the circuit

Because the circuit provides a path for electricity to flow

Because the wires are not connected properly

What is the primary purpose of an electric cell in a torch?

To convert electrical energy into light energy

To store electrical energy for later use

To provide electricity to the bulb in the torch

Which of the following is NOT a function of an electric cell?

Providing a power source for portable devices

Acting as a conductor of electricity

Storing chemical energy to be converted into electrical energy

Powering devices like wristwatches and radios

two terminals and two filaments

multiple terminals and single filament

single terminal and single filament

Why should you never connect the two terminals of an electric cell directly?

It could cause the cell to explode

It will deplete the cell quickly and cause it to stop working

It will increase the voltage in the circuit

It will make the cell produce light

What is the purpose of a switch in an electric circuit?

To increase the voltage in the circuit

To control the flow of electricity by opening or closing the circuit

To convert electrical energy into light energy

How can you determine if a material is a conductor or an insulator using a simple circuit?

By checking if the material is shiny

By observing if the bulb glows when the material is included in the circuit

By measuring the length of the material

By noting the color of the material

How does a closed electric circuit ensure that a bulb lights up?

By allowing the bulb to bypass the electric cell

By connecting both terminals of the electric cell to each other directly

By providing a continuous path for current to flow through the bulb

By using a switch to open and close the circuit

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