Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 407 · 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.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
2. 2.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) energy used each second (d) current
3. 3.True or false: the voltmeter is joined in series. (a) False (b) True
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
7. 7.True or false: the ammeter is joined across a part. (a) True (b) False
8. 8.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
12. 12.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
13. 13.True or false: energy used each second is measured in volts (V). (a) True (b) False
14. 14.True or false: current is measured in watts (W). (a) False (b) True
15. 15.📏 How many milliamperes (mA) is 1.54 A?
16. 16.📏 How many kilo-ohms (kΩ) is 100 Ω? =
17. 17.True or false: the ammeter measures voltage. (a) False (b) True
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
19. 19.True or false: voltage is measured in watts (W). (a) False (b) True
20. 20.True or false: the ammeter is joined in series. (a) True (b) False
21. 21.📏 How many watts (W) is 2.2 kW?
22. 22.📏 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
23. 23.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
24. 24.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
25. 25.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
26. 26.📏 How many kilowatts (kW) is 2000 W? =
27. 27.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
28. 28.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
29. 29.📏 How many milliamperes (mA) is 0.38 A?
30. 30.📏 How many milliamperes (mA) is 0.54 A?
31. 31.📏 How many amperes (A) is 1210 mA? =
32. 32.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) the flow of charge (d) energy used each second
33. 33.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
34. 34.True or false: the voltmeter measures voltage. (a) False (b) True
35. 35.True or false: power is measured in amperes (A). (a) True (b) False
36. 36.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) current (d) resistance
37. 37.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
38. 38.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
39. 39.📏 How many kilowatts (kW) is 4100 W? =
40. 40.📏 How many kilowatts (kW) is 1000 W? =

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