What is electric charge, current, , power, how are they related?
Answers
Electrical Energy: The Watt
If voltage, (V) equals Joules per Coulombs (V = J/C) and Amperes (I) equals charge (coulombs) per second (A = Q/t), then we can define electrical power (P) as being the totality of these two quantities. This is because electrical power can also equal voltage times amperes, that is: P = V*I.
Answer:
SHORT ANSWER
If a neutral object loses electrons, it becomes more positively charged. If a neutral object gains electrons, it becomes more negatively charged. Current is the rate of flow of positive charge. Current can be caused by the flow of electrons, ions or other charged particles
Explanation:
BIG ANSWER
Electric charge is a property of matter. There are two types of electric charge, which are conventionally labelled positive and negative. Two objects that have the same charge exert repulsive forces on each other. Two objects that have opposite charges exert attractive forces on each other.
Electric charge is measured in coulombs left bracket, C, right bracket,(C) and has the symbol Q,Q.
Electric charge is quantised, which means any object can only have an integer multiple of a certain value of charge. The smallest value of the magnitude of charge an object can have is equal to the magnitude of the charge of an electron, which is approximately 1, point, 60, times, 10, start superscript, −, 19, end superscript, C,1.60×10
−19
C. Electrons are negatively charged. If a neutral object loses electrons, it becomes more positively charged. If a neutral object gains electrons, it becomes more negatively charged.
Current is the rate of flow of positive charge. Current can be caused by the flow of electrons, ions or other charged particles. Electrons are negatively charged, so the direction electrons flow is the opposite direction to current.
The equation relating electric charge, current and time is:
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electric charge
Q
=electric current×time
=It