Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 305 · 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 current? (a) ammeter (b) voltmeter
2. 2.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
3. 3.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
5. 5.📏 How many milliamperes (mA) is 0.93 A?
6. 6.📏 How many amperes (A) is 2280 mA? =
7. 7.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
8. 8.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 How many milliamperes (mA) is 2.56 A?
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) how much a part resists (d) the push of a cell
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
14. 14.📏 How many kilowatts (kW) is 1350 W? =
15. 15.📏 How many kilowatts (kW) is 500 W? =
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) power (d) resistance
21. 21.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) the flow of charge (d) power
22. 22.📏 How many kilowatts (kW) is 2400 W? =
23. 23.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
24. 24.True or false: the ammeter is joined in series. (a) True (b) False
25. 25.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) voltage (d) energy used each second
26. 26.📏 How many ohms (Ω) is 7.5 kΩ?
27. 27.📏 How many ohms (Ω) is 7.6 kΩ?
28. 28.True or false: voltage is measured in watts (W). (a) False (b) True
29. 29.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
30. 30.True or false: voltage is measured in volts (V). (a) True (b) False
31. 31.📏 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
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.📏 How many watts (W) is 1.1 kW?
34. 34.📏 How many milliamperes (mA) is 1.87 A?
35. 35.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
36. 36.True or false: the ammeter is joined across a part. (a) True (b) False
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) a bigger tank (d) the flow of water
38. 38.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
39. 39.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) how much a part resists (d) energy used each second
40. 40.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) current (d) the flow of charge

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