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Resistance, current, and power

0 votes

asked Aug 21, 2015 in ELECTRICAL ENGINEERING by anonymous

3 Answers

0 votes

(1)

Step 1 :

Redraw the circuit.

Observe the diagram.

The resistor bipasses with short circuit.

So the resistor is neglected in the circuit.

The resistors and are in series.

Step 2 :

The resistors and are connected in parallel.

Total resistance is .

Solution :

Total resistance is .

answered Aug 21, 2015 by sandy Pupil
0 votes

(2)

Step 1 :

Circuit current .

Step 2 :

Find current running through .

Current Division Rule : .

Current running through is .

Solution :

Current running through is .

answered Aug 21, 2015 by sandy Pupil
0 votes

(3)

Step 1 :

Power dissipated across resistor is .

Find current running through .

image

Substitute corresponding values.

image

Current running through is .

Step 2 :

Power dissipated across resistor is .

Substitute corresponding values in the above equation.

Power dissipated on is .

Solution :

Power dissipated on is .

answered Aug 21, 2015 by sandy Pupil
edited Aug 21, 2015 by sandy

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