Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 37 · 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 current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
3. 3.📏 How many kilowatts (kW) is 3900 W? =
4. 4.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) voltage (d) how much a part resists
5. 5.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) current (d) resistance
6. 6.True or false: resistance is measured in ohms (Ω). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
9. 9.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
10. 10.📏 How many kilowatts (kW) is 750 W? =
11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
13. 13.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) resistance (d) power
16. 16.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
17. 17.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
18. 18.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) energy used each second (d) the push of a cell
19. 19.📏 How many kilowatts (kW) is 3350 W? =
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) the push of a cell (d) resistance
21. 21.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many ohms (Ω) is 8.6 kΩ?
23. 23.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
24. 24.📏 How many milliamperes (mA) is 2.38 A?
25. 25.True or false: power is measured in ohms (Ω). (a) False (b) True
26. 26.📏 How many milliamperes (mA) is 3 A?
27. 27.Which of these is measured in amperes (A)? (a) current (b) resistance (c) power (d) how much a part resists
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
29. 29.📏 How many ohms (Ω) is 2.7 kΩ?
30. 30.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
31. 31.📏 How many watts (W) is 4.2 kW?
32. 32.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
33. 33.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) the push of a cell (d) current
34. 34.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
35. 35.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
36. 36.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
37. 37.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.True or false: the voltmeter measures voltage. (a) False (b) True
39. 39.📏 How many ohms (Ω) is 3.5 kΩ?
40. 40.True or false: voltage is measured in watts (W). (a) False (b) True

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