Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 555 · 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 volts (V)? (a) current (b) the flow of charge (c) energy used each second (d) voltage
2. 2.True or false: the voltmeter is joined across a part. (a) True (b) False
3. 3.📏 How many amperes (A) is 1530 mA? =
4. 4.📏 How many ohms (Ω) is 3.8 kΩ?
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
6. 6.True or false: energy used each second is measured in volts (V). (a) False (b) True
7. 7.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) how much a part resists
8. 8.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
9. 9.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
10. 10.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
11. 11.📏 How many amperes (A) is 640 mA? =
12. 12.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
13. 13.True or false: voltage is measured in amperes (A). (a) False (b) True
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
16. 16.📏 How many amperes (A) is 1020 mA? =
17. 17.📏 How many kilowatts (kW) is 2450 W? =
18. 18.📏 How many watts (W) is 1.1 kW?
19. 19.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) energy used each second (d) the push of a cell
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
22. 22.True or false: the ammeter is joined across a part. (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.📏 How many kilowatts (kW) is 1800 W? =
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
26. 26.📏 How many watts (W) is 0.7 kW?
27. 27.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
28. 28.📏 How many kilowatts (kW) is 1300 W? =
29. 29.📏 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
30. 30.📏 How many watts (W) is 4.5 kW?
31. 31.True or false: the ammeter measures voltage. (a) False (b) True
32. 32.Which of these is measured in watts (W)? (a) current (b) resistance (c) energy used each second (d) the push of a cell
33. 33.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
34. 34.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
36. 36.📏 How many amperes (A) is 1090 mA? =
37. 37.True or false: voltage is measured in ohms (Ω). (a) False (b) True
38. 38.📏 How many milliamperes (mA) is 2.06 A?
39. 39.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) energy used each second (d) voltage
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank

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