Describe How Resistance Affects Electric Current

Main 3 effects of electric current are heating chemical magnetism.

Describe how resistance affects electric current. 832 electric charge is carried by charged particles so an electric current is a flow of charged particles the moving particles are called charge carriers which may be one of several types of. This continuous movement of electric charge through the conductors of a circuit is called a current and it is often referred to in terms of flow just like the flow of a liquid through a hollow. Different factors affect these benefits such as resistance. What is the unit for current.

The resistance of human body taken between two hands or between and legs ranges 500ma to 50kω. An electric circuit is formed when a conductive path is created to allow electric charge to continuously move. Current in gases and liquids generally consists of a flow of positive ions in one direction together with a flow of negative ions in the opposite direction. In most metals more heat means more resistance because the molecules vibrate more strongly and collide taking energy from the electrons.

The length of the wire increases. Voltage current and resistance. To produce an electric current charges must flow continuously from one place to another. In wire thicker wires carry more current because there is more space for electrons to travel without rubbing against one another creating excess heat and potentially starting a fire.

An electric current flows when electrons. That is v ir an alternative statement of ohm s law is i v r. And current that alternates back and forth through the circuit is known as alternating current or a c. Current that flows in a single direction is called direct current or d c.

A complete unbroken path through which electric charges can flow is called a what. The resistance in a wire increases as. If the resistance of the human body has assumed as 20kω then a contact with 230 volt supply can be potentially fatal 230 20 000 11 5 ma. Describe how a change in resistance would affect.

An electric current is the rate of flow of electric charge past a point. There are various day to day benefits of these electric current effects such as heating water electrolysis electroplating and electromagnets are just a few. Resistance is an. Move through a conductor such as a metal wire.

The resistance of a circuit is the total opposition offered to the flow of electric current. The greater the resistance the less current there is for a given voltage. Heat also affects electrical resistance. Whether ac or dc current only flows through a circuit when a voltage source is connected to it with its flow being limited to both the resistance of the circuit and the voltage source pushing it.

The current between 10 to 20 ma current is dangerous because the sufferer loses muscular control. The thickness of the wire decreases.