Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 458 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.True or false: the ammeter is joined across a part. (a) True (b) False
2. 2.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) current
3. 3.📏 How many milliamperes (mA) is 0.71 A?
4. 4.📏 How many ohms (Ω) is 6.1 kΩ?
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
7. 7.Which of these is measured in amperes (A)? (a) power (b) current (c) the push of a cell (d) how much a part resists
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
9. 9.True or false: the voltmeter is joined in series. (a) False (b) True
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
11. 11.📏 How many milliamperes (mA) is 1.55 A?
12. 12.📏 How many ohms (Ω) is 7 kΩ?
13. 13.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
14. 14.📏 How many amperes (A) is 560 mA? =
15. 15.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
16. 16.True or false: power is measured in watts (W). (a) False (b) True
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
18. 18.True or false: the voltmeter measures current. (a) False (b) True
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
20. 20.Which of these is measured in watts (W)? (a) power (b) current (c) the flow of charge (d) voltage
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 700 Ω? =
23. 23.📏 How many ohms (Ω) is 1.4 kΩ?
24. 24.True or false: resistance is measured in amperes (A). (a) True (b) False
25. 25.True or false: resistance is measured in ohms (Ω). (a) True (b) False
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
27. 27.📏 How many amperes (A) is 1930 mA? =
28. 28.True or false: current is measured in volts (V). (a) True (b) False
29. 29.📏 How many ohms (Ω) is 0.7 kΩ?
30. 30.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
32. 32.📏 How many watts (W) is 2 kW?
33. 33.📏 How many amperes (A) is 170 mA? =
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
36. 36.📏 How many amperes (A) is 860 mA? =
37. 37.📏 How many amperes (A) is 2350 mA? =
38. 38.True or false: the ammeter measures voltage. (a) True (b) False
39. 39.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) voltage
40. 40.📏 How many ohms (Ω) is 6.3 kΩ?

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