3rd Quarterly Exam in CSS 2

What current is very easily from one part of a circuit to another?

It supplies electrical energy. It is always flowing in one direction.

It supplies electrical energy, it is also continually changing direction.

It has two coils of wire linked by an iron core. Transformers are used to step up (increase) and step down (decrease) AC voltages. Energy is transferred between the coils by the magnetic field in the core. There is no electrical connection between the coils.

It is a connection to earth. For many electronic circuits this is the 0V (zero volts) of the power supply, but for mains electricity and some radio circuits it really means the earth. It is also known as ground.

What transducer which converts electrical energy to light? For example a warning light on a car dashboard.

It is a 'blob' should be drawn where wires are connected (joined), but it is sometimes omitted. Wires connected at 'crossroads' should be staggered slightly to form two Tjunctions, as shown on the right.

It supplies electrical energy.

The larger terminal (on the left) is positive (+). A single cell is often called a battery, but strictly a battery is two or more cells joined together.

It is a safety device which will 'blow' (melt) if the current flowing through it exceeds a specified value.

What  transducer which converts electrical energy to light. This symbol is used for a lamp providing illumination, for example a car headlamp or torch bulb.

It is a transducer which converts electrical energy to kinetic energy (motion).

It is  a transducer which converts electrical energy to sound.

It is a transducer which converts electrical energy to heat.

It is a transducer which converts electrical energy to sound.

It is a coil of wire which creates a magnetic field when current passes through it. It may have an iron core inside the coil. It can be used as a transducer converting electrical energy to mechanical energy by pulling on something.