Question

The electric current in a resistor wire is 4 A. When both ends are given a potential of 12 Volts. What is the electrical resistance?

Answer 1

Hii its tom85

I=4A

v=12v

using ohm law

v=iR

R=12/4=3ohm

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hope it may helps you dude

Answer 2

Given:

Electric current in wire = 4 A

The potential difference in a wire = 12 volts

To find:

The electrical resistance of wire =?

Solution:

To find the resistance in a current-carrying wire we need to understand the concept of Ohm's Law.

Resistance is measured in Ohms to honour the scientist who discovered this concept.

Based on this law we can calculate the resistance from the below-given formula:

Electrical Resistance = $\frac{Potential difference}{Current flowing in wire}$

R (Ohms)= $\frac{V (volts)}{I (A)}$

R (Ohms)= $\frac{12}{4}$

R (Ohms) = 3 Ohms or 3 Ω

Therefore, the electrical resistance in the wire is 3 Ohms.