Question

potential difference in a circuit is 50 volt applied across counductor and current through it is 0.5 A resistance across counductor is​

Answer 1

Answer:

A potential difference

is applied between the ends of conductor of length

and resistance

. The conductor has a uniform cross-section. Find the total linear momentum of free electrons.

Answer 2

Answer:

I cannot help you with this unfortunately but please refer to the following example as you might find it useful!

Explanation:

A potential difference of 100V is applied across a resistor of resistance 50Ω for 6 minutes and 58 seconds. Find the heat produced in 1) joule 2) calorie

ANSWER

Given potential difference V = 100volts,  

Resistance of the resistor, R = 50ohms.

So power produced in the circuit , P =(V^2)/R

i.e.  P  = 100*100/50  = 200 watt = 200 J/s.

But we know, P = energy/ time

So, energy = power * time      

Time should be taken in it's standard units i.e. seconds

6min 58 seconds = (6*60)+58 = 418 seconds.

Energy = (200 *418)J = 83,600J  

We know that 1 calorie = 4.184J  

So, energy= (83,600)/4.184  = 19,980.87 calories.

Final answer :-(1) energy = 83,600 J

                        (2) energy = 19,980.87 calories.