What variables can we have in an electrical experiment?

These are variables, which we can change during the experiment to find out how they affect the electrical resistance of a length of wire.

• The length of the wire.
• The diameter of the wire.
• The cross sectional area of the wire.
• The material the wire is made up of.
• The mass of the wire.
• The density.
• The temperature of the wire.

What are the variables of electricity?

Control Variables are the material, length, cross section area and temperature of the wire.

What are independent variables in A electrical circuit?

Independent variable: potential difference/volts (V). Dependent variable: current (A). Control variable: number of components (e.g. 1 filament bulb, 1 resistor), type of power source.

What is a variable current?

Variable voltage/current variable frequency source is used to simulate mains conditions of different countries. Also it is used for verifying frequency response of power devices, frequency relays and components. Variable current variable frequency source are used for checking current transformers.

What is the variable of voltage?

Voltage (Volts) Voltage is a measure of the work required to move a charge from one point to another in a electric field. Thus the unit “volt” is defined as a Joules (J) per Coulomb (C).

What is an example of a variable in science?

Examples of Variables

Question	Independent Variable (What I change)	Dependent Variables (What I observe)
Does an electric motor turn faster if you increase the voltage?	Voltage of the electricity, measured in volts	Speed of rotation, measured in revolutions per minute (RPMs)

Is wire independent variable?

Independent Variable is the length of wire. These are kept the same by not changing the wire during the experiment, by keeping the current small and opening the switching between readings.