The power dissipated by a resistor of 10 ohm when a current of 2A passes through it is:

Here are some basics of electrical engineering: Circuit knowledge: A thorough knowledge of circuit operation is vital for developing and repairing electrical devices. Circuit knowledge is learned in college and university courses, and it relies heavily on fundamental physics. Resistance: Resistance is a fundamental concept in physics and electrical engineering that refers to the opposition encountered by an electrical current when flowing through a material or a circuit component. It is denoted by the symbol "R" and is measured in ohms (Ω). Voltage: Voltage is one of the two most important... Show more

Here are some basics of electrical engineering:

Circuit knowledge: A thorough knowledge of circuit operation is vital for developing and repairing electrical devices. Circuit knowledge is learned in college and university courses, and it relies heavily on fundamental physics.
Resistance: Resistance is a fundamental concept in physics and electrical engineering that refers to the opposition encountered by an electrical current when flowing through a material or a circuit component. It is denoted by the symbol "R" and is measured in ohms (Ω).
Voltage: Voltage is one of the two most important concepts in the field of electrical engineering (the other is current).
Capacitance: Capacitance is one of the basic concepts behind electronics, and it is widely used.
Control systems: Control panels house various electronic devices that provide signals to direct the operation of equipment and machines. 

Other basics of electrical engineering include:

Electric power: Electrical power engineering is one of the oldest fields or specialties of electrical engineering because it is the only field that will specifically discuss the use of electrical energy, its delivery from one place to another, and its generation. 

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