: a very large amount or number: an amount that is much greater than what is necessary. A plethora of books have been written on the subject. a plethora of information. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. a very large amount or number: an amount that is much greater than what is necessary. A plethora of books have been written on the subject. a plethora of information. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
Ohm's law defines the relationship between the voltage, current, and resistance in an electric circuit: I = V / R. The current is directly proportional to the voltage and inversely proportional to the resistance.
Report Abuse. Let rho = resistivity in ohm/m. In which case R = rho L; where R is the resistance and L is the length of the wire. As you can see, when we double L to 2L, that causes R to go to 2R, the wire's resistance doubles. ANS.f length of the wire is doubled, the free electrons in the wire would collide with the ions more times causing the resistance increased. Therefore, Resistance is directly proportional to length of the wire. Light Â· 3 years ago. Thumbs up.