NATURAL SCIENCES: ENERGY TRANSFER IN AN ELECTRICAL SYSTEMS

Which of the following is not a component of a circuit?

• wire

• resistor

• copper

• rubber

Cells have a ____________ terminals

• negative

• positive

• negative & positive

• no

We say a circuit is closed when

• a bulb lights up

• no current is flowing through the circuit

• the switch is open

• none of the above

______ are negatively charged particles

______ hinder the flow of current in an electric circuit

What kind of circuit is represented by the picture above?

• series circuit

• series

Define an eletric current?

Explain the heating effect of electric current