Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 494 · 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 unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
2. 2.📏 How many milliamperes (mA) is 1.78 A?
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
4. 4.True or false: the ammeter is joined across a part. (a) True (b) False
5. 5.True or false: the voltmeter is joined in series. (a) True (b) False
6. 6.Which of these is measured in volts (V)? (a) power (b) current (c) the push of a cell (d) resistance
7. 7.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
8. 8.📏 How many amperes (A) is 1200 mA? =
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
11. 11.📏 How many kilowatts (kW) is 400 W? =
12. 12.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
13. 13.📏 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
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.True or false: the voltmeter measures voltage. (a) False (b) True
18. 18.📏 How many ohms (Ω) is 7.9 kΩ?
19. 19.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) the push of a cell (d) current
20. 20.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
21. 21.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
22. 22.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) the flow of charge (d) how much a part resists
23. 23.True or false: the push of a cell is measured in volts (V). (a) False (b) True
24. 24.📏 How many milliamperes (mA) is 1.45 A?
25. 25.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
26. 26.📏 How many milliamperes (mA) is 0.82 A?
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
29. 29.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) current (d) voltage
30. 30.📏 How many watts (W) is 4.8 kW?
31. 31.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) energy used each second
32. 32.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
33. 33.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) power (d) the flow of charge
34. 34.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
35. 35.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
36. 36.📏 How many ohms (Ω) is 0.7 kΩ?
37. 37.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
38. 38.True or false: the ammeter measures current. (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 1 A?
40. 40.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True

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