Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 752 · 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 of these is measured in amperes (A)? (a) the push of a cell (b) current (c) voltage (d) how much a part resists
2. 2.📏 How many amperes (A) is 420 mA? =
3. 3.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) the flow of charge (d) energy used each second
4. 4.True or false: the push of a cell is measured in volts (V). (a) True (b) False
5. 5.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
6. 6.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
7. 7.📏 How many kilo-ohms (kΩ) is 4500 Ω? =
8. 8.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
15. 15.📏 How many amperes (A) is 1190 mA? =
16. 16.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
17. 17.📏 How many watts (W) is 2.6 kW?
18. 18.📏 How many ohms (Ω) is 7.3 kΩ?
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
21. 21.True or false: energy used each second is measured in watts (W). (a) False (b) True
22. 22.📏 How many watts (W) is 4.9 kW?
23. 23.📏 How many milliamperes (mA) is 1.99 A?
24. 24.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
25. 25.📏 How many ohms (Ω) is 2.8 kΩ?
26. 26.📏 How many watts (W) is 1.2 kW?
27. 27.True or false: current is measured in amperes (A). (a) True (b) False
28. 28.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
29. 29.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
30. 30.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
31. 31.📏 How many ohms (Ω) is 4.4 kΩ?
32. 32.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) current
33. 33.📏 How many milliamperes (mA) is 1.88 A?
34. 34.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
35. 35.True or false: the ammeter measures voltage. (a) True (b) False
36. 36.📏 How many kilowatts (kW) is 3700 W? =
37. 37.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) voltage
38. 38.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
39. 39.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
40. 40.📏 How many amperes (A) is 890 mA? =

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