Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 930 · 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 flow of charge is measured in amperes (A). (a) True (b) False
2. 2.True or false: the ammeter is joined in series. (a) True (b) False
3. 3.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) how much a part resists (d) the push of a cell
4. 4.📏 How many milliamperes (mA) is 1.53 A?
5. 5.True or false: resistance is measured in ohms (Ω). (a) False (b) True
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
7. 7.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
9. 9.📏 How many kilowatts (kW) is 2350 W? =
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
11. 11.📏 How many amperes (A) is 810 mA? =
12. 12.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
13. 13.True or false: current is measured in ohms (Ω). (a) True (b) False
14. 14.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
15. 15.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) resistance
16. 16.True or false: the ammeter measures voltage. (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 0.3 A?
18. 18.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) resistance (d) the push of a cell
19. 19.True or false: current is measured in amperes (A). (a) True (b) False
20. 20.📏 How many amperes (A) is 1860 mA? =
21. 21.📏 How many ohms (Ω) is 7.8 kΩ?
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
23. 23.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) current
24. 24.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
26. 26.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
27. 27.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
30. 30.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) voltage (d) resistance
31. 31.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
32. 32.True or false: resistance is measured in volts (V). (a) True (b) False
33. 33.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
34. 34.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
35. 35.📏 How many kilowatts (kW) is 3950 W? =
36. 36.True or false: the voltmeter measures voltage. (a) True (b) False
37. 37.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 How many milliamperes (mA) is 0.61 A?
39. 39.📏 How many ohms (Ω) is 7.6 kΩ?
40. 40.📏 How many watts (W) is 2.4 kW?

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