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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 2: Resistor Combinations and Ohms Law for Closed Circuits — Picture questions (exam style)

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  • Questions count: 12
  • Passing grade: 60%
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1.
5 identical cells in series (each E = 1.5 V, r = 0.3 Ω) but one is reversed as shown; external R = 6 Ω. Find the current.
5 identical cells in series (each E = 1.5 V, r = 0.3 Ω) but one is reversed as shown; external R = 6 Ω. Find the current.
0.800 A
0.600 A
0.750 A
1.00 A
2.
Identical lamps are connected as shown (A, B, C in parallel). Rank them by brightness, brightest first.
Identical lamps are connected as shown (A, B, C in parallel). Rank them by brightness, brightest first.
A > B > C
A=B=C
B > C > A
A > C > B
3.
6 identical cells (each E = 2 V, r = 0.2 Ω) in parallel, then across R = 6 Ω. Find the current in R.
6 identical cells (each E = 2 V, r = 0.2 Ω) in parallel, then across R = 6 Ω. Find the current in R.
1.67 A
0.323 A
0.333 A
0.331 A
4.
3 identical cells (each E = 2 V, r = 0.6 Ω) in series with R = 6 Ω as shown. Find the current in R.
3 identical cells (each E = 2 V, r = 0.6 Ω) in series with R = 6 Ω as shown. Find the current in R.
0.769 A
0.323 A
0.909 A
1.00 A
5.
3 identical cells (each E = 1.5 V, r = 0.5 Ω) in parallel, then across R = 2 Ω. Find the current in R.
3 identical cells (each E = 1.5 V, r = 0.5 Ω) in parallel, then across R = 2 Ω. Find the current in R.
0.750 A
0.600 A
0.692 A
1.29 A
6.
4 identical cells (each E = 1.5 V, r = 0.6 Ω) in parallel, then across R = 5 Ω. Find the current in R.
4 identical cells (each E = 1.5 V, r = 0.6 Ω) in parallel, then across R = 5 Ω. Find the current in R.
0.811 A
0.300 A
0.291 A
0.268 A
7.
5 identical cells (each E = 1.2 V, r = 1.0 Ω) in parallel, then across R = 4 Ω. Find the current in R.
5 identical cells (each E = 1.2 V, r = 1.0 Ω) in parallel, then across R = 4 Ω. Find the current in R.
0.240 A
0.286 A
0.300 A
0.667 A
8.
4 identical cells in series (each E = 2 V, r = 1.0 Ω) but one is reversed as shown; external R = 3 Ω. Find the current.
4 identical cells in series (each E = 2 V, r = 1.0 Ω) but one is reversed as shown; external R = 3 Ω. Find the current.
0.857 A
1.14 A
1.33 A
0.571 A
9.
6 identical cells (each E = 2 V, r = 0.3 Ω) in series with R = 5 Ω as shown. Find the current in R.
6 identical cells (each E = 2 V, r = 0.3 Ω) in series with R = 5 Ω as shown. Find the current in R.
2.26 A
1.76 A
0.396 A
2.40 A
10.
2 identical cells (each E = 1.2 V, r = 0.3 Ω) in parallel, then across R = 8 Ω. Find the current in R.
2 identical cells (each E = 1.2 V, r = 0.3 Ω) in parallel, then across R = 8 Ω. Find the current in R.
0.145 A
0.147 A
0.150 A
0.279 A
11.
6 identical cells in series (each E = 1.2 V, r = 0.5 Ω) but one is reversed as shown; external R = 4 Ω. Find the current.
6 identical cells in series (each E = 1.2 V, r = 0.5 Ω) but one is reversed as shown; external R = 4 Ω. Find the current.
1.03 A
0.857 A
0.686 A
1.20 A
12.
4 identical cells (each E = 1.2 V, r = 0.2 Ω) in series with R = 3 Ω as shown. Find the current in R.
4 identical cells (each E = 1.2 V, r = 0.2 Ω) in series with R = 3 Ω as shown. Find the current in R.
1.50 A
1.60 A
0.393 A
1.26 A
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