Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 936 · 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 voltage? (a) voltmeter (b) ammeter
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.True or false: current is measured in ohms (Ω). (a) False (b) True
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
5. 5.True or false: resistance is measured in ohms (Ω). (a) True (b) False
6. 6.True or false: power is measured in watts (W). (a) True (b) False
7. 7.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) power (d) voltage
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
9. 9.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell
10. 10.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
11. 11.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
12. 12.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
14. 14.True or false: the push of a cell is measured in volts (V). (a) False (b) True
15. 15.📏 How many ohms (Ω) is 4.4 kΩ?
16. 16.True or false: the ammeter measures current. (a) False (b) True
17. 17.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
18. 18.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
19. 19.True or false: voltage is measured in volts (V). (a) True (b) False
20. 20.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) how much a part resists (d) energy used each second
21. 21.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) the flow of charge (d) power
22. 22.Which of these is measured in ohms (Ω)? (a) power (b) current (c) the flow of charge (d) how much a part resists
23. 23.📏 How many ohms (Ω) is 2 kΩ?
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
26. 26.📏 How many amperes (A) is 1860 mA? =
27. 27.True or false: power is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
30. 30.📏 How many watts (W) is 4.9 kW?
31. 31.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
32. 32.📏 How many ohms (Ω) is 5.7 kΩ?
33. 33.📏 How many amperes (A) is 110 mA? =
34. 34.True or false: energy used each second is measured in amperes (A). (a) True (b) False
35. 35.📏 How many amperes (A) is 2510 mA? =
36. 36.📏 How many ohms (Ω) is 3.1 kΩ?
37. 37.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
38. 38.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 4050 W? =
40. 40.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)

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