Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 866 · 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 ohms (Ω) is 2.3 kΩ?
2. 2.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
3. 3.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) the flow of charge (d) the push of a cell
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.True or false: the voltmeter is joined across a part. (a) False (b) True
10. 10.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) power (c) resistance (d) energy used each second
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
13. 13.True or false: voltage is measured in amperes (A). (a) True (b) False
14. 14.Which of these is measured in volts (V)? (a) power (b) resistance (c) current (d) voltage
15. 15.📏 How many milliamperes (mA) is 2.77 A?
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
17. 17.📏 How many amperes (A) is 1930 mA? =
18. 18.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) power (d) resistance
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.📏 How many ohms (Ω) is 5.9 kΩ?
22. 22.True or false: power is measured in volts (V). (a) False (b) True
23. 23.True or false: the voltmeter measures voltage. (a) True (b) False
24. 24.True or false: voltage is measured in watts (W). (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 1.72 A?
26. 26.True or false: power is measured in watts (W). (a) False (b) True
27. 27.True or false: the voltmeter measures current. (a) False (b) True
28. 28.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
29. 29.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
30. 30.📏 How many ohms (Ω) is 3.3 kΩ?
31. 31.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
32. 32.📏 How many watts (W) is 1.6 kW?
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
34. 34.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
36. 36.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
37. 37.Which of these is measured in watts (W)? (a) voltage (b) power (c) resistance (d) the flow of charge
38. 38.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
39. 39.📏 How many amperes (A) is 2590 mA? =
40. 40.True or false: the ammeter measures voltage. (a) True (b) False

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