Resistor

Trending Questions

Q. Consider the star network shown in figure. The resistance between terminals A and B with terminals C open is

6 Ω

, between terminals B and C with terminal A open is

11 Ω

, and between terminals C and A with terminal B open is

9 Ω

. Then

$R_{A} = 4 Ω, R_{B} = 2 Ω, R_{C} = 5 Ω$
$R_{A} = 2 Ω, R_{B} = 4 Ω, R_{C} = 7 Ω$
$R_{A} = 3 Ω, R_{B} = 3 Ω, R_{C} = 4 Ω$
$R_{A} = 5 Ω, R_{B} = 1 Ω, R_{C} = 10 Ω$

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R_{A}

and

R_{B}

are the input resistances of circuits as shown below. The circuits extend infinitely in the direction shown. Which one of the following statements is TRUE?

$R_{A} = R_{B}$
$R_{A} = R_{B} = 0$
$R_{A} < R_{B}$
$R_{B} = R_{A} / (1 + R_{A})$

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Q. As shown in the figure, a 1

Ω

resistance is connected across a source that has a load line v + i = 100. The current through the resistance is

25 A
50 A
100 A
200 A

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Q. All resistances in the circuit in figure are of R ohms each. The switch is initially open. what happens to the lamp's intensity when the switch is closed?

Increases
Decreases
Remains same
Answer depends on the value of R

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