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OJEE Kirchhoff's Laws — practice questions

Explore 4 free Kirchhoff's Laws questions in OJEE Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Kirchhoff's Laws questions and exercises with answers

Showing questions 1–4 of 4.

Kirchhoff's **voltage (loop) law** in any closed loop of an electrical network states:Read the answer and worked solution →In an electrical network, a **junction** is defined as:Read the answer and worked solution →In an electrical network, a **loop** (mesh) is:Read the answer and worked solution →While applying Kirchhoff's first law, currents **arriving** at the junction are considered:Read the answer and worked solution →

Worked practice questions

Kirchhoff's **voltage (loop) law** in any closed loop of an electrical network states:

  1. $\sum P = 0$
  2. $\sum IR + \sum \varepsilon = 0$
  3. $\sum I = 0$
  4. $V = IR$ only
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Correct answer: B. $\sum IR + \sum \varepsilon = 0$

Around any closed loop, $\sum IR + \sum \varepsilon = 0$. This is **conservation of energy** — the net energy gained per unit charge in one full loop is zero.

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In an electrical network, a **junction** is defined as:

  1. A point where two or more conductors are joined
  2. The mid-point of a resistor
  3. The terminal of a battery only
  4. Any point on a single wire
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Correct answer: A. A point where two or more conductors are joined

A junction (node) is any point where two or more conductors meet. Currents at junctions satisfy KCL.

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In an electrical network, a **loop** (mesh) is:

  1. Any open conductor
  2. A short circuit only
  3. Any closed conducting path
  4. A bend in a single wire
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Correct answer: C. Any closed conducting path

A loop is any closed conducting path in the network around which KVL can be applied.

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