题目内容
The current flowing through a resistor is directly proportional to the voltage across the resistor’s terminals. This relation is represented with a well-known Ohm’s law: V = I×R.
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Color bands are usually used to represent the resistance value. The first and second band represent the numerical value of the resistor, the third band specify the power-of-ten multiplier.
A capacitor is an electronic component consisting of a pair of conductors separated by a dielectric. A capacitor can store electrical charge in an electrical field.
An inductor is an electronic component that can store energy in a magnetic field created by the electric current passing through it.
A transformer is an electrical component that converts AC electricity from one voltage to another with little loss of power. The input coil is called the primary winding and the output coil is called the secondary winding.
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