Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 348 · 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.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) current (d) resistance
2. 2.True or false: power is measured in watts (W). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
5. 5.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) energy used each second (d) voltage
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.📏 How many ohms (Ω) is 7.9 kΩ?
8. 8.True or false: the voltmeter measures current. (a) False (b) True
9. 9.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) current (c) voltage (d) energy used each second
10. 10.True or false: current is measured in watts (W). (a) True (b) False
11. 11.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
13. 13.📏 How many ohms (Ω) is 9.3 kΩ?
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
15. 15.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) how much a part resists (d) energy used each second
16. 16.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) the flow of charge (d) resistance
17. 17.📏 How many milliamperes (mA) is 0.57 A?
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
19. 19.True or false: the ammeter measures current. (a) True (b) False
20. 20.True or false: the ammeter measures voltage. (a) False (b) True
21. 21.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
23. 23.True or false: the voltmeter is joined in series. (a) True (b) False
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.📏 How many watts (W) is 0.7 kW?
26. 26.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
27. 27.📏 How many ohms (Ω) is 4.6 kΩ?
28. 28.📏 How many ohms (Ω) is 1.7 kΩ?
29. 29.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
30. 30.📏 How many kilowatts (kW) is 4900 W? =
31. 31.📏 How many ohms (Ω) is 0.8 kΩ?
32. 32.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
34. 34.True or false: energy used each second is measured in volts (V). (a) True (b) False
35. 35.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
36. 36.📏 How many ohms (Ω) is 4.5 kΩ?
37. 37.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
38. 38.📏 How many amperes (A) is 1220 mA? =
39. 39.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) how much a part resists (d) current
40. 40.True or false: the ammeter is joined across a part. (a) False (b) True

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