Question

Calculate the potential difference across the ends of a wire of resistance 0.2 ohm when a current of 0.05A passes through it.

Answer 1

Answer:

use formula V=IR

given:

R= 0.2 ohm

I= .05 Ampere

to calculate:

V=?

solution:

v=0.05×0.2=0.01 volt

Answer 2

the potential difference across the ends of   wire = 0.01  V

Explanation:

Current flowing through a wire = Potential difference across wire / Resistance of wire

Potential difference across wire the ends of a wire =   ?

Resistance of wire  = 0.2 ohm  

Current flowing through   wire  = 0.05 A

=> 0.05  = Potential difference across wire  / 0.2

=> Potential difference across wire   = 0.05 * 0.2

=> Potential difference across wire    = 0.01  V

the potential difference across the ends of   wire = 0.01  V

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