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To what voltage should adjustable source E be set in order to produce a current of 0.3A in 400ohms resister?
written 8.6 years ago by gravatar for teamques10 teamques10 ★ 69k modified 3.1 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k

Mumbai University > FE > Sem 1 > Basic Electrical and Electronics Engineering

Marks: 3 M

Year: MAY 2012
basic electrical engineering
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written 8.6 years ago by gravatar for teamques10 teamques10 ★ 69k

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Let IL’ be the current flowing across the 400ohms resistor due to voltage source E. (current will be shorted)

IL’= E …..(I=V/R)

200+400

IL’= E Amps.

600

Let IL” be the current flowing across 400ohms resistor due to current source i.e 6A.(voltage will be shorted)

I”L= 200 X0.6 = 0.2Amps …. (200 ll 600)

200+600

Total current by superposition theorem = IL = 0.3

IL = IL’ + I”L

0.3 = 0.2 + E

$\hspace{0.8cm}$ 600

E= 60V.
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