F13 Neha B 10-2-2021 Swati D13

In the circuit shown above, the current through RL is

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  1. 6 A
  2. 4 A
  3. 2 A
  4. 0

Answer (Detailed Solution Below)

Option 1 : 6 A
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F1 Shraddha Neha 27.02.2021 D 4

Applying Millman's theorem we get

\({V_{TH}} = \frac{{\frac{{{V_1}}}{{{R_1}}} + \frac{{{V_2}}}{{{R_2}}}}}{{\frac{1}{{{R_1}}} + \frac{1}{{{R_2}}}}}\)

\( = \frac{{\frac{{420}}{{120}} + \frac{{420}}{{60}}}}{{\frac{1}{{120}} + \frac{1}{{60}}}}\)

\( = \frac{{\frac{{840}}{{120}}}}{{\frac{3}{{120}}}}\)

= 420 V
\({R_{th}} = \frac{1}{{\left( {\frac{1}{{120}} + \frac{1}{{60}}} \right)}} = 40{\rm{\Omega }}\)

601a43a799dd7101082e3931 16400770429031


\({I_L} = \frac{{420}}{{70}}\)

= 6A

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