Define charge, potential difference, current, work, ohms law, power, resistance, parallel circuit, kirchoffs law?
charge it is the property of a body by virtue of which its attract or repel another charge charges are of two types positive and negative like charges repel and unlike charges attract each other
potential difference it is define as amount of work done in moving a unit positive charge from one point to another point.
V=W/q unit is volt
the rate of flow of charge is known as current
I=q/t unit is ampere
the product of force and displacement is called as work in the direction of force
W=Fscos(theta) unit is Joule
this law states that current flowing through a wire is directly proportional to the potential across the wire
its is define as the rate of doing work
P=VI unit is watt
the opposition offered by conducter to the flow of current is called as resistance
in a circuit if voltage across many circuit elements is same then they are called to be in parallel
Kirchhoff's current law states that current flowing into a node (or a junction) must be equal to current flowing out of it. This is a consequence of charge conservation.
Kirchhoff's voltage law states that the sum of all voltages around any closed loop in a circuit must equal zero. This is a consequence of charge conservation and also conservation of energy.
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