Suppose an indicator light on a DVD player has a resistance of 138 Ω. How many volts are supplied to operate it, given that 21 mA ( 2.1 × 10–2 A) passes through it?
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
Suppose an indicator light on a DVD player has a resistance of 138 Ω. How many volts are supplied to operate it, given that 21 mA ( 2.1 × 10–2 A) passes through it?
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