Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 580 · 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.📏 How many watts (W) is 0.6 kW?
2. 2.True or false: energy used each second is measured in watts (W). (a) False (b) True
3. 3.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
4. 4.📏 How many milliamperes (mA) is 0.87 A?
5. 5.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
7. 7.True or false: the voltmeter is joined in series. (a) False (b) True
8. 8.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) energy used each second (d) voltage
9. 9.📏 How many amperes (A) is 2700 mA? =
10. 10.📏 How many kilowatts (kW) is 1350 W? =
11. 11.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
12. 12.📏 How many amperes (A) is 930 mA? =
13. 13.True or false: power is measured in watts (W). (a) False (b) True
14. 14.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) energy used each second (d) voltage
15. 15.📏 How many milliamperes (mA) is 1.12 A?
16. 16.Which of these is measured in volts (V)? (a) current (b) resistance (c) how much a part resists (d) the push of a cell
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
18. 18.Which of these is measured in amperes (A)? (a) power (b) voltage (c) current (d) resistance
19. 19.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
20. 20.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) the flow of charge (d) current
21. 21.Which of these is measured in watts (W)? (a) voltage (b) power (c) the push of a cell (d) current
22. 22.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
23. 23.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
26. 26.True or false: the voltmeter measures current. (a) True (b) False
27. 27.📏 How many kilo-ohms (kΩ) is 5600 Ω? =
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) energy used each second (d) how much a part resists
29. 29.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
30. 30.True or false: the ammeter is joined across a part. (a) True (b) False
31. 31.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
34. 34.📏 How many ohms (Ω) is 7.2 kΩ?
35. 35.📏 How many milliamperes (mA) is 2.38 A?
36. 36.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
37. 37.📏 How many ohms (Ω) is 9.7 kΩ?
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter

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