If there are two bulbs connected in series and one blows out, what happens to the other bulb?

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If there are two bulbs connected in series and one blows out, what happens to the other bulb?a)The other bulb continues to glow with the same brightnessb)The other bulb stops glowingc)The other bulb glows with increased brightnessd)The other bulb also burns outCorrect answer is option 'B'. Can you explain this answer?

Since the two bulbs are connected in series, if the first bulb burns out there is a break in the circuit and hence the second bulb does not glow.

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

Electrical Engineering (EE) Question

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

a)

The other bulb continues to glow with the same brightness

b)

The other bulb stops glowing

c)

The other bulb glows with increased brightness

d)

The other bulb also burns out

Correct answer is option 'B'. Can you explain this answer?

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

Test: Coils Connected in Series

Answers

RITIKA JAWAHAR Jan 31, 2020

Since the two bulbs are connected in series, if the first bulb burns out there is a break in the circuit and hence the second bulb does not glow.

Upvote | 2 Reply

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Sireesha Lakkanaboina

Aug 13, 2018

Because in series connection current has only one direction if there any problem then other also effect by that

Upvote | 1 Reply Answer this doubt

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

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स्रोत : edurev.in

Series Circuits

This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Series Circuits”. 1. Find the current in the circuit. a) 1 A b) 2 A c) 3 A d) 4 A 2. In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and ... Read more

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

Basic Electrical Engineering Questions and Answers – Series Circuits

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This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Series Circuits”.

1. Find the current in the circuit.

a) 1 A b) 2 A c) 3 A d) 4 A View Answer advertisement

2. In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor etcetera?

a) Voltage b) Current

c) Both voltage and current

d) Neither voltage nor current

View Answer

3. Voltage across the 60ohm resistor is______

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

a) 72V b) 0V c) 48V d) 120V View Answer

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4. Find the voltage across the 6 ohm resistor.

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

a) 150V b) 181.6V c) 27.27V d) 54.48V View Answer

5. If there are two bulbs connected in series and one blows out, what happens to the other bulb?

a) The other bulb continues to glow with the same brightness

b) The other bulb stops glowing

c) The other bulb glows with increased brightness

d) The other bulb also burns out

View Answer

Become Top Ranker in Basic Electrical Engineering Now!

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6. What is the value of x if the current in the circuit is 5A?

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

a) 15 ohm b) 25 ohm c) 55 ohm d) 75 ohm View Answer

7. A voltage across a series resistor circuit is proportional to?

a) The amount of time the circuit was on for

b) The value of the resistance itself

c) The value of the other resistances in the circuit

d) The power in the circuit

View Answer advertisement

8. Many resistors connected in series will?

a) Divide the voltage proportionally among all the resistors

b) Divide the current proportionally

c) Increase the source voltage in proportion to the values of the resistors

d) Reduce the power to zero

View Answer

9. What is the voltage measured across a series short?

a) Infinite b) Zero

c) The value of the source voltage

d) Null View Answer advertisement

10. What happens to the current in the series circuit if the resistance is doubled?

a) It becomes half its original value

b) It becomes double its original value

c) It becomes zero

d) It becomes infinity

View Answer

Sanfoundry Global Education & Learning Series – Basic Electrical Engineering.

To practice all areas of Basic Electrical Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.

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If there are two bulbs connected in series and one blows out, what happens to the other bulb?

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स्रोत : qna.talkjarvis.com

This set of Basic Electrical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Series Circuits”.

1. Find the current in the circuit.

If there are two bulbs connected in series and one blows out, what happens to the other bulb?
a) 1 A b) 2 A c) 3 A d) 4 A

View Answer

Answer: b
Explanation: I=V/R. Total resistance R = 20+40=60ohm. V=120V. I=120/60=2A.

2. In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor etcetera? a) Voltage b) Current c) Both voltage and current d) Neither voltage nor current

View Answer

Answer: b
Explanation: In a series circuit, the current across all elements remain the same and the total voltage of the circuit is the sum of the voltages across all the elements.

3. Voltage across the 60ohm resistor is______

If there are two bulbs connected in series and one blows out, what happens to the other bulb?
a) 72V b) 0V c) 48V d) 120V

View Answer

Answer: b
Explanation: The 60ohm resistance is shorted since current always choses the low resistance path. Voltage across short circuit is equal to zero, hence voltage across the resistor is 0.

4. Find the voltage across the 6 ohm resistor.

If there are two bulbs connected in series and one blows out, what happens to the other bulb?
a) 150V b) 181.6V c) 27.27V d) 54.48V

View Answer

Answer: c Explanation: Total current I=150/(6+12+15)=(150/33)V. V across 6 ohm = 6*I = 6*(150/33)V = 27.27V.

5. If there are two bulbs connected in series and one blows out, what happens to the other bulb? a) The other bulb continues to glow with the same brightness b) The other bulb stops glowing c) The other bulb glows with increased brightness d) The other bulb also burns out

View Answer

Answer: b
Explanation: Since the two bulbs are connected in series, if the first bulb burns out there is a break in the circuit and hence the second bulb does not glow.

Become Top Ranker in Basic Electrical Engineering Now!

6. What is the value of x if the current in the circuit is 5A?

If there are two bulbs connected in series and one blows out, what happens to the other bulb?
a) 15 ohm b) 25 ohm c) 55 ohm d) 75 ohm

View Answer

Answer: a
Explanation: Total voltage=sum of voltages across each resistor. =>150=10*5+5*5+5*x. Solving the equation, we get x=15 ohm.

7. A voltage across a series resistor circuit is proportional to? a) The amount of time the circuit was on for b) The value of the resistance itself c) The value of the other resistances in the circuit d) The power in the circuit

View Answer

Answer: b
Explanation: V=IR hence the voltage across a series resistor circuit is proportional to the value of the resistance.

8. Many resistors connected in series will? a) Divide the voltage proportionally among all the resistors b) Divide the current proportionally c) Increase the source voltage in proportion to the values of the resistors d) Reduce the power to zero

View Answer

Answer: a
Explanation: In a series circuit, the current remains the same across all resistors hence the voltage divides proportionally among all resistors.

9. What is the voltage measured across a series short? a) Infinite b) Zero c) The value of the source voltage d) Null

View Answer

Answer: b
Explanation: A short is just a wire. The potential difference between two points of a wire is zero hence the voltage measured is equal to zero.

10. What happens to the current in the series circuit if the resistance is doubled? a) It becomes half its original value b) It becomes double its original value c) It becomes zero d) It becomes infinity

View Answer

Answer: a
Explanation: I=V/R. If R becomes 2R then I becomes I/2 i.e. half of its original value.

Sanfoundry Global Education & Learning Series – Basic Electrical Engineering.

To practice all areas of Basic Electrical Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.

  • Get Free Certificate of Merit in Basic Electrical Engineering
  • Participate in Basic Electrical Engineering Certification Contest
  • Become a Top Ranker in Basic Electrical Engineering
  • Take Basic Electrical Engineering Tests
  • Chapterwise Practice Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
  • Chapterwise Mock Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

If there are two bulbs connected in series and one blows out, what happens to the other bulb?

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