Electric circuits

It is the difference in electric potential between two points.

• Current

• Voltage

• Resistance

• Power

It is the flow of free electrons from one end of the conductor to another under the effect of the potential difference.

• Current

• Voltage

• Resistance

• Power

It is used to measure the opposition to the flow of electrical current.

• Current

• Voltage

• Resistance

• Power

The unit of current is

• V

• Ω

• W

• A

The unit of voltage is

• V

• Ω

• W

• A

The unit of resistance is

• V

• Ω

• W

• A

The direction of electrical current is always

• from positive to negative

• from negative to positive

• from right to left

• from left to right

"Potential difference" is another name for

• Resistance

• Current

• Voltage

• Power

The law that connects between current, voltage and resistance is

• Newton's law

• Ohm's law

• Boyle's law

• kirchhoff's law

If the resistance increased, what happens to the current?

• increase

• decrease

• not changed

• stops