Electric Current

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
The flow of electric charges constitute an .

For an electrical appliance to work, electric current must it.

An electric current is measured by the amount of electric charge moving per at any point in the circuit. The conventional symbol for current is ‘I’

One ampere is defined as the flow of electric charge across a surface at the rate of one per second.

current is in the direction opposite to electron flow.

An electric current consisted of moving charges.This movement of charges is called conventional current.

The electron flow actually takes place from the terminal to the terminal of the battery. This movement is known as electron flow.

Electric current is measured using a device called .

An electric current can flow only when there is a difference.

Electrical charges need energy to push them along a .

An electric charge always flows from a point at potential to a point at potential.

An ammeter must be connected in in a circuit.

Potential difference between two points is measured by using a device called .

of a component is the ratio of the potential difference across it to the current flowing through it.

Electrical is the measure of a material's ability to conduct an electric current

The SI unit of electrical resistivity is the

The SI unit of potential difference is .

The SI unit for measuring an electric current is the .

The S.I unit of resistance is

The S.I Unit of electrical conductivity is /meter