Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 820 · 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 push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.📏 How many kilo-ohms (kΩ) is 4700 Ω? =
3. 3.📏 How many amperes (A) is 1140 mA? =
4. 4.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) resistance (d) the flow of charge
5. 5.📏 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
6. 6.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.📏 How many kilowatts (kW) is 2650 W? =
9. 9.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
10. 10.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
11. 11.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
12. 12.True or false: the ammeter is joined across a part. (a) True (b) False
13. 13.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) resistance
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
16. 16.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
18. 18.📏 How many milliamperes (mA) is 0.84 A?
19. 19.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
20. 20.True or false: the push of a cell is measured in volts (V). (a) True (b) False
21. 21.📏 How many watts (W) is 3.8 kW?
22. 22.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 0.18 A?
24. 24.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) power (d) the flow of charge
25. 25.True or false: the push of a cell is measured in watts (W). (a) True (b) False
26. 26.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) how much a part resists
27. 27.📏 How many amperes (A) is 830 mA? =
28. 28.True or false: power is measured in volts (V). (a) False (b) True
29. 29.True or false: the voltmeter measures current. (a) False (b) True
30. 30.📏 How many amperes (A) is 1530 mA? =
31. 31.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
32. 32.📏 How many ohms (Ω) is 0.5 kΩ?
33. 33.📏 How many ohms (Ω) is 5.2 kΩ?
34. 34.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
35. 35.📏 How many milliamperes (mA) is 0.57 A?
36. 36.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many amperes (A) is 90 mA? =
39. 39.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
40. 40.True or false: current is measured in amperes (A). (a) False (b) True

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