Tag: physics

Questions Related to physics

State whether given statement is True or False
The sum of all the voltage drops around a single closed loop in a circuit is zero.

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. True

  2. False

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Correct Option: A
Explanation:
Kirchhoff's Second Law – The Voltage Law, (KVL)
Kirchhoff's Voltage Law or KVL, states that “in any closed loop network, the total voltage around the loop is equal to the sum of all the voltage drops within the same loop” which is also equal to zero. In other words the algebraic sum of all voltages within the loop must be equal to zero. This idea by Kirchhoff is known as the Conservation of Energy.

Between any two points in a circuit, the sum of all .............. is the same through any pathway.

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. charge

  2. current

  3. potential difference

  4. resistance

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Correct Option: C
Explanation:

Kirchhoff's voltage law says that if we add up all the voltage drops that occur around the loop, the total will be equal to the total voltage applied across the loop.hence between any two point in the circuit , the sum of all the voltage drops is the same through any pathway.

Kirchoff's voltage law and current law are respectively in accordance with the conservation of 

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. Charge and momentum

  2. Charge and energy

  3. Energy and charge

  4. Energy and momentum

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Correct Option: A

Kirchhoff's junction law is equivalent to 

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. conservation of energy

  2. conservation of charge

  3. conservation of electric potential

  4. conservation of electric flux

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Correct Option: A

If the magnitude of voltage in a circuit changes with time between zero to peak value and direction changes periodically then the voltage is called 

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. Alternative voltage

  2. direct voltage

  3. constant voltage

  4. reversible voltage

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Correct Option: C

Kirchhoff's first law at a junction is based on conservation of 

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. Angular momentum

  2. Mass

  3. Charge

  4. Energy

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Correct Option: C

For a $DC$ circuit, Kirchoff's rules yield the following equations.
$I _{3}=I _{1}+I _{2}$
$10 = 3I _{1}-2I _{2}$
$50=2I _{2}+9.6I _{3}$
What is the current $I _{2}$ (Amps)?

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. $0.131$

  2. $-1.37$

  3. $0.245$

  4. $-3.5$

  5. $1.00$

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Correct Option: E

Kirchhoff's Loop rule is a direct consequence of law of conservation of

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. Charge

  2. Momentum

  3. Angular momentum

  4. Energy

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Correct Option: D

Kirchhoff's first and second law shows the conservation of :-

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. linear momentum and angular momentum.

  2. charge and energy

  3. mass and energy.

  4. charge and linear momentum.

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Correct Option: B
Explanation:

Kirchhoff's first law is the consequence of conservation of charge and second law is the conservation of energy.

Kirchoffs 1st and 2nd laws are based on conservation of

physics kirchhoff's law circuit problems kirchoff's law and problems on it equivalent resistance in series and parallel connection

  1. Energy and charge respectively

  2. Charge and energy respectively

  3. Mass and charge respectively

  4. None of these above

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Correct Option: B
Explanation:

Kirchhoff's $1$st law states that the total amount of current coming at a junction must be equal to the total amount of current going away from it i.e. the total charge must be conserved. Thus Kirchhoff's $1$st law is based on the conservation of charge.

Kirchhoff's $2$nd law states that the sum of the potential drop across all the components in a loop must be zero. Thus Kirchhoff's $2$nd law is based on the conservation of energy.