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How much work will be done by electric energy source with a P.d of 4KV that delivers a current of 1 A for 1 minute?

User Mark Essel
by
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1 Answer

4 votes

Answer:

Given that battery V = 12.0 V

Resistance R = 2.0 ohms

a ) current in the battery is I = V /R

= 12.0 V / 2.0

= 6.0 A

b ) charge transported in the circuit is q = i * t

= 6.0 A * 10 s

= 60 C

c ) Work done on the charge by the electric field is 0 ( there is no internal resistance )

d ) work done through the resistor is w = P * t

= ( V)^2 / R * t

= ( 12.0 V )^2 / 2 *10s

= 720J

e ) Total work done is equal to work done through the resistor

W_total = 720 J

f ) there is no internal resistance hence E = 0

User Rasoul Taheri
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4.0k points