Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 931 · 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.📏 How many milliamperes (mA) is 0.75 A?
2. 2.📏 How many kilo-ohms (kΩ) is 500 Ω? =
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
4. 4.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) voltage (d) the flow of charge
5. 5.📏 How many watts (W) is 3.1 kW?
6. 6.📏 How many kilowatts (kW) is 300 W? =
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.True or false: energy used each second is measured in watts (W). (a) True (b) False
9. 9.📏 How many kilowatts (kW) is 2300 W? =
10. 10.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
11. 11.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
12. 12.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
15. 15.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
16. 16.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) power
17. 17.True or false: resistance is measured in ohms (Ω). (a) False (b) True
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
19. 19.📏 How many amperes (A) is 1210 mA? =
20. 20.Which of these is measured in ohms (Ω)? (a) voltage (b) the push of a cell (c) the flow of charge (d) resistance
21. 21.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
22. 22.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
23. 23.📏 How many amperes (A) is 650 mA? =
24. 24.True or false: the voltmeter measures current. (a) True (b) False
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
26. 26.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) voltage (d) the flow of charge
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.Which of these is measured in watts (W)? (a) voltage (b) current (c) energy used each second (d) the flow of charge
30. 30.Which of these is measured in ohms (Ω)? (a) power (b) current (c) voltage (d) how much a part resists
31. 31.📏 How many ohms (Ω) is 9.6 kΩ?
32. 32.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) resistance
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
34. 34.📏 How many amperes (A) is 1370 mA? =
35. 35.📏 How many ohms (Ω) is 2.9 kΩ?
36. 36.True or false: power is measured in ohms (Ω). (a) False (b) True
37. 37.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.📏 How many amperes (A) is 180 mA? =

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