Nichrome wire of cross-sectional radius 0.791 mm is to be used in winding a heating coil. If the coil must carry a current of 9.25 A when a voltage of 1.20 × 102 Ω is applied across its ends, find (a) the required resistance of the coil and (b) the length of wire you must use to wind the coil

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Q: Given that the delivered power to a resistor is equal to P when the current flowing in the resistor…

A: solution

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Q: A piece of metal of volume 106 mm is used to make a coil 20.2 m long. What is the resistance (in 2)…

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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.