Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 156 · 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.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
2. 2.True or false: the voltmeter is joined across a part. (a) False (b) True
3. 3.📏 How many ohms (Ω) is 9.3 kΩ?
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.True or false: voltage is measured in volts (V). (a) False (b) True
7. 7.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
8. 8.📏 How many amperes (A) is 2720 mA? =
9. 9.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
10. 10.True or false: the push of a cell is measured in watts (W). (a) True (b) False
11. 11.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
12. 12.True or false: voltage is measured in amperes (A). (a) True (b) False
13. 13.📏 How many kilowatts (kW) is 5000 W? =
14. 14.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) energy used each second (d) current
15. 15.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.True or false: the voltmeter measures voltage. (a) True (b) False
18. 18.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) power (d) current
19. 19.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
20. 20.📏 How many milliamperes (mA) is 2.7 A?
21. 21.📏 How many milliamperes (mA) is 0.59 A?
22. 22.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) power
23. 23.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
24. 24.True or false: energy used each second is measured in amperes (A). (a) True (b) False
25. 25.📏 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
26. 26.True or false: the ammeter is joined across a part. (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
28. 28.Which of these is measured in watts (W)? (a) current (b) voltage (c) the push of a cell (d) power
29. 29.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) voltage
30. 30.📏 How many ohms (Ω) is 2.1 kΩ?
31. 31.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
32. 32.📏 How many watts (W) is 4.2 kW?
33. 33.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) resistance (d) the push of a cell
34. 34.True or false: resistance is measured in volts (V). (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 0.74 A?
36. 36.📏 How many ohms (Ω) is 4.8 kΩ?
37. 37.📏 How many amperes (A) is 40 mA? =
38. 38.True or false: resistance is measured in ohms (Ω). (a) False (b) True
39. 39.True or false: power is measured in amperes (A). (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water

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