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Physics

Chapter 1 - Electric Current, Ohms Law and Kirchhoffs Laws

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Chapter 2 - Magnetic Effects of Electric Current and Measuring Instruments

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Chapter 3 - Electromagnetic Induction and AC Dynamo and Transformer

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Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Quiz

Lesson 3: Kirchhoffs First and Second Laws for Complex Circuits — Picture questions (exam style)

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  • Questions count: 5
  • Passing grade: 60%
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1.
In the circuit E₁ = 9 V, E₂ = 10 V (no internal resistance), R₁ = 2 Ω, R₂ = 3 Ω, R₃ = 1 Ω. Which option is correct?
In the circuit E₁ = 9 V, E₂ = 10 V (no internal resistance), R₁ = 2 Ω, R₂ = 3 Ω, R₃ = 1 Ω. Which option is correct?
I₃ = 2.36 A from X to Y, battery being charged: none
I₃ = 4.27 A from Y to X, battery being charged: E₂
I₃ = 2.36 A from X to Y, battery being charged: E₂
I₃ = 4.27 A from X to Y, battery being charged: none
2.
In the circuit point C is earthed (0 V). Which option is correct? (source 24 V, no internal resistance)
In the circuit point C is earthed (0 V). Which option is correct? (source 24 V, no internal resistance)
V_D = +10.7 V, V_B = +2.67 V
V_D = +10.7 V, V_B = -8 V
V_D = -10.7 V, V_B = +2.67 V
V_D = +10.7 V, V_B = -2.67 V
3.
The Wheatstone bridge shown is balanced (galvanometer reads zero). P = 5 Ω, Q = 12 Ω, R = 5 Ω. Find S.
The Wheatstone bridge shown is balanced (galvanometer reads zero). P = 5 Ω, Q = 12 Ω, R = 5 Ω. Find S.
20.9 Ω
12.0 Ω
2.08 Ω
24.0 Ω
4.
The table gives the component values and the current in R₃. Calculate E₂.
The table gives the component values and the current in R₃. Calculate E₂.
4.00 V
5.00 V
2.00 V
4.64 V
5.
In the bridge (12 V supply, no internal resistance) the galvanometer is removed; P = 1 Ω, Q = 15 Ω, R = 15 Ω, S = 4 Ω. Find the p.d. between B and D.
In the bridge (12 V supply, no internal resistance) the galvanometer is removed; P = 1 Ω, Q = 15 Ω, R = 15 Ω, S = 4 Ω. Find the p.d. between B and D.
2.53 V
11.2 V
13.8 V
8.72 V
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