Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 67 · 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 power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
2. 2.📏 How many amperes (A) is 1360 mA? =
3. 3.📏 How many milliamperes (mA) is 0.88 A?
4. 4.True or false: resistance is measured in ohms (Ω). (a) False (b) True
5. 5.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) voltage (d) how much a part resists
6. 6.📏 How many amperes (A) is 2430 mA? =
7. 7.📏 How many milliamperes (mA) is 2.6 A?
8. 8.📏 How many amperes (A) is 1430 mA? =
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.True or false: voltage is measured in volts (V). (a) True (b) False
11. 11.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
12. 12.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) the flow of charge (d) resistance
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
14. 14.True or false: current is measured in amperes (A). (a) False (b) True
15. 15.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
16. 16.📏 How many ohms (Ω) is 2.6 kΩ?
17. 17.True or false: the voltmeter measures current. (a) False (b) True
18. 18.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
19. 19.📏 How many kilowatts (kW) is 50 W? =
20. 20.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
21. 21.📏 How many ohms (Ω) is 3.3 kΩ?
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
24. 24.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
25. 25.📏 How many amperes (A) is 2590 mA? =
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
27. 27.True or false: energy used each second is measured in watts (W). (a) False (b) True
28. 28.📏 How many amperes (A) is 1890 mA? =
29. 29.True or false: voltage is measured in ohms (Ω). (a) False (b) True
30. 30.📏 How many milliamperes (mA) is 1.02 A?
31. 31.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
33. 33.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
34. 34.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
35. 35.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
36. 36.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) current (d) resistance
37. 37.📏 How many kilowatts (kW) is 1400 W? =
38. 38.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
39. 39.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) resistance
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000

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