A wire has a length of 2.0 m and a resistance of 5.0 Ω. Find the electric field existing inside the wire if it carries a current of 10 A.

25Vm-1

Given,

Length, l of the wire= 2m

Resistance, R of the wire=5 Ω

Current I, passing through the wire= 10A

Formula used,

From electrostatics, we know that Electric field, E is

Or it can be written as

Where l is the distance over which potential difference V has an effect

Solution,

We know that the potential difference, V in the wire with current I passing and with a resistance R is

By substituting the given values in the above expression, we get V as

Substituting this value of potential difference in eqn.1, we can find the electric field,

So,

Or

Hence the electric field existing inside the wire is 25Vm-1

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Electrostatics of Conductors50 mins
Electric Dipole46 mins
Electric field inside cavity37 mins
Electric Flux - Theory46 mins
Test Your Knowledge of Electric Charge & Coulomb's Law47 mins
Check your knowledge of Electric Potential | Quiz45 mins
Electric Charges and Fields - 0556 mins
Few Applications of Gauss's law54 mins
Relation between electric field and potential34 mins
Electric Charges and Fields - 0854 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses