Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 771 · 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) voltmeter (b) ammeter
2. 2.📏 How many milliamperes (mA) is 1.64 A?
3. 3.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
4. 4.📏 How many watts (W) is 0.9 kW?
5. 5.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
7. 7.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) resistance (d) voltage
8. 8.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
9. 9.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
10. 10.📏 How many kilowatts (kW) is 1700 W? =
11. 11.True or false: resistance is measured in ohms (Ω). (a) False (b) True
12. 12.📏 How many watts (W) is 0.4 kW?
13. 13.True or false: power is measured in volts (V). (a) False (b) True
14. 14.True or false: energy used each second is measured in amperes (A). (a) True (b) False
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
16. 16.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
18. 18.True or false: the voltmeter measures current. (a) False (b) True
19. 19.📏 How many amperes (A) is 320 mA? =
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
21. 21.📏 How many ohms (Ω) is 8.3 kΩ?
22. 22.📏 How many ohms (Ω) is 9.5 kΩ?
23. 23.📏 How many milliamperes (mA) is 2.46 A?
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
26. 26.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
27. 27.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) power (d) how much a part resists
28. 28.📏 How many milliamperes (mA) is 1.47 A?
29. 29.True or false: energy used each second is measured in watts (W). (a) True (b) False
30. 30.True or false: the voltmeter measures voltage. (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 1.26 A?
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
33. 33.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) the push of a cell (d) resistance
34. 34.True or false: voltage is measured in amperes (A). (a) True (b) False
35. 35.📏 How many amperes (A) is 900 mA? =
36. 36.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) resistance (d) the flow of charge
37. 37.📏 How many ohms (Ω) is 2.4 kΩ?
38. 38.📏 How many kilo-ohms (kΩ) is 4200 Ω? =
39. 39.📏 How many watts (W) is 4.4 kW?
40. 40.📏 How many watts (W) is 5 kW?

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