Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 217 · 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: current is measured in volts (V). (a) True (b) False
2. 2.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
3. 3.True or false: the push of a cell is measured in volts (V). (a) False (b) True
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
6. 6.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
7. 7.📏 How many ohms (Ω) is 8.4 kΩ?
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
9. 9.True or false: the voltmeter is joined in series. (a) True (b) False
10. 10.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
11. 11.📏 How many amperes (A) is 2430 mA? =
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.True or false: power is measured in amperes (A). (a) True (b) False
14. 14.📏 How many amperes (A) is 1710 mA? =
15. 15.True or false: current is measured in ohms (Ω). (a) True (b) False
16. 16.📏 How many watts (W) is 0.4 kW?
17. 17.📏 How many watts (W) is 3.2 kW?
18. 18.True or false: voltage is measured in volts (V). (a) True (b) False
19. 19.True or false: the ammeter is joined across a part. (a) False (b) True
20. 20.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
23. 23.📏 How many milliamperes (mA) is 0.81 A?
24. 24.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
25. 25.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) current
26. 26.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.📏 How many ohms (Ω) is 1 kΩ?
28. 28.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
29. 29.📏 How many amperes (A) is 1170 mA? =
30. 30.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.True or false: resistance is measured in ohms (Ω). (a) False (b) True
32. 32.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
33. 33.📏 How many watts (W) is 2.2 kW?
34. 34.📏 How many ohms (Ω) is 3.9 kΩ?
35. 35.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) voltage (d) resistance
36. 36.True or false: resistance is measured in volts (V). (a) False (b) True
37. 37.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
38. 38.Which of these is measured in watts (W)? (a) current (b) resistance (c) how much a part resists (d) power
39. 39.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) energy used each second (d) voltage
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure

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