Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 818 · 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 kilo-ohms (kΩ) is 1200 Ω? =
2. 2.True or false: current is measured in watts (W). (a) False (b) True
3. 3.True or false: energy used each second is measured in watts (W). (a) False (b) True
4. 4.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) current (d) resistance
5. 5.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
6. 6.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) voltage (d) power
7. 7.True or false: the ammeter is joined in series. (a) False (b) True
8. 8.📏 How many milliamperes (mA) is 1.91 A?
9. 9.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
12. 12.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
13. 13.📏 How many amperes (A) is 370 mA? =
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
15. 15.True or false: power is measured in ohms (Ω). (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
17. 17.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) current (d) resistance
18. 18.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) how much a part resists (d) the flow of charge
19. 19.📏 How many ohms (Ω) is 6 kΩ?
20. 20.True or false: resistance is measured in volts (V). (a) False (b) True
21. 21.True or false: the voltmeter measures voltage. (a) True (b) False
22. 22.True or false: power is measured in volts (V). (a) False (b) True
23. 23.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
24. 24.True or false: energy used each second is measured in volts (V). (a) False (b) True
25. 25.True or false: resistance is measured in ohms (Ω). (a) False (b) True
26. 26.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) energy used each second (d) the push of a cell
27. 27.📏 How many milliamperes (mA) is 0.51 A?
28. 28.📏 How many watts (W) is 3.9 kW?
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.📏 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
31. 31.📏 How many kilowatts (kW) is 4000 W? =
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
33. 33.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
36. 36.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
37. 37.📏 How many amperes (A) is 2080 mA? =
38. 38.📏 How many watts (W) is 4.8 kW?
39. 39.True or false: the voltmeter is joined in series. (a) False (b) True
40. 40.True or false: how much a part resists is measured in volts (V). (a) True (b) False

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