Two resistors of 20 Ω are connected in parallel to each other in a circuit. Then, this combination is added with a resistance of 10 Ω in series. What will be their equivalent resistance?

Two identical resistors of 10Ω are connected in parallel in a circuit. This combination is connected with third resistor of 10Ω in series. The equivalent resistance of the combination will be equal to . . . . . . . .?

A

30 Ω

B

5 Ω

C

15 Ω

D

10 Ω

Two identical resistors, each of 10 ohm, are connected in parallel. This combination, in turn, is connected to a third resistor of 10 ohm. The equivalent resistance of the combination is ___.

A

30 ohm

B

5 ohm

C

15 ohm

D

10 ohm

Two identical resistors of 20 ohm each are connected in parallel. This combination, in turn, is connected to a 10 ohm resister. The equivalent resistance of the combination will be

A

30 ohm

B

10 ohm

C

5 ohm

D

20 ohm

Two resistances of equal value, when connected in parallel, give an equivalent resistance of R. If these resistors are connected in series, the equivalent resistance will be

A

R

B

4R

C

2R

D

R/2

Two 30 Ω resistors are connected in parallel. What resistance should be connected in series with this parallel combination so that the power in each 30 Ω resistor is one fourth of the total power? Indicate your choice of correct answer.

A

30 Ω

B

15 Ω

C

10 Ω

D

120 Ω

A voltage source-series resistance combination is equivalent to a current source-parallel resistance combination if and only if their 1. Respective open-circuit voltages are equal 2. Respective short-circuit currents are equal 3. Resistance remains same in both cases Which of the above statements are correct?

A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

The parallel combination of a 470 Ω resistor and a 1.2 kΩ resistor is in series with the parallel combination of three 3 kΩ resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of

A

470 Ω or 1.2 kΩ

B

3 kΩ

C

470 Ω

D

1.2 kΩ

If n resistors of unequal resistances are connected in parallel,and the percenrage error in all resistors are k then,total error in parallel combination is?

A

\(x \frac{∂z}{∂x}+y \frac{∂z}{∂y}=\frac{x^2+y^2}{x+y} e^{\frac{x^2+y^2}{x+y}}\)

B

\(x \frac{∂z}{∂x}+y \frac{∂z}{∂y}=1-\frac{x^2+y^2}{x+y} e^{\frac{x^2+y^2}{x+y}}\)

C

\(x \frac{∂z}{∂x}+y \frac{∂z}{∂y}=1+\frac{x^2+y^2}{x+y} e^{\frac{x^2+y^2}{x+y}}\)

D

\(x \frac{∂z}{∂x}+y \frac{∂z}{∂y}=-\frac{x^2+y^2}{x+y} e^{\frac{x^2+y^2}{x+y}}\)

Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is

A

900 μA

B

9 mA

C

90 mA

D

800 μA

If two resistances are connected in series, then its equivalent resistance is 45 Ω and if the same resistances are connected in parallel, then its equivalent resistance is 10 Ω, What are the values of these resistances ?

A

10 Ω, 45 Ω

B

10 Ω, 30 Ω

C

15 Ω, 30 Ω

D

10 Ω, 45 Ω

Two resistors of 20 Ω are connected in parallel to each other in a circuit. Then, this combination is added with a resistance of 10 Ω in series. What will be their equivalent resistance?

Related Questions