Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 798 · 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.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
2. 2.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
5. 5.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
6. 6.True or false: the voltmeter measures voltage. (a) True (b) False
7. 7.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
8. 8.📏 How many milliamperes (mA) is 0.93 A?
9. 9.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.📏 How many kilo-ohms (kΩ) is 7000 Ω? =
12. 12.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
14. 14.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
15. 15.True or false: current is measured in watts (W). (a) True (b) False
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) voltage
19. 19.Which of these is measured in watts (W)? (a) voltage (b) current (c) power (d) the push of a cell
20. 20.📏 How many kilowatts (kW) is 3550 W? =
21. 21.True or false: the ammeter measures voltage. (a) True (b) False
22. 22.📏 How many milliamperes (mA) is 2.3 A?
23. 23.True or false: the voltmeter is joined in series. (a) False (b) True
24. 24.📏 How many watts (W) is 2.6 kW?
25. 25.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) current (d) voltage
26. 26.True or false: current is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
28. 28.📏 How many kilo-ohms (kΩ) is 600 Ω? =
29. 29.📏 How many kilowatts (kW) is 2450 W? =
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
31. 31.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
32. 32.📏 How many amperes (A) is 1490 mA? =
33. 33.📏 How many amperes (A) is 780 mA? =
34. 34.True or false: the push of a cell is measured in watts (W). (a) True (b) False
35. 35.True or false: resistance is measured in volts (V). (a) False (b) True
36. 36.True or false: voltage is measured in volts (V). (a) False (b) True
37. 37.True or false: voltage is measured in amperes (A). (a) True (b) False
38. 38.📏 How many ohms (Ω) is 0.8 kΩ?
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.📏 How many milliamperes (mA) is 1.37 A?

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