Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 227 · 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 energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
2. 2.True or false: the push of a cell is measured in watts (W). (a) True (b) False
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
5. 5.True or false: voltage is measured in watts (W). (a) True (b) False
6. 6.True or false: the voltmeter measures current. (a) False (b) True
7. 7.📏 How many kilo-ohms (kΩ) is 6100 Ω? =
8. 8.📏 How many milliamperes (mA) is 0.84 A?
9. 9.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) current (d) power
10. 10.📏 How many watts (W) is 3.2 kW?
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
13. 13.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
14. 14.📏 How many kilowatts (kW) is 2200 W? =
15. 15.📏 How many milliamperes (mA) is 1.29 A?
16. 16.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
17. 17.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) voltage
18. 18.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
19. 19.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
22. 22.📏 How many ohms (Ω) is 2.6 kΩ?
23. 23.📏 How many milliamperes (mA) is 2.7 A?
24. 24.True or false: the ammeter measures voltage. (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
26. 26.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) resistance (d) how much a part resists
27. 27.True or false: resistance is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
29. 29.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
30. 30.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
31. 31.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
32. 32.True or false: current is measured in watts (W). (a) True (b) False
33. 33.📏 How many amperes (A) is 2680 mA? =
34. 34.📏 How many amperes (A) is 2010 mA? =
35. 35.True or false: energy used each second is measured in watts (W). (a) False (b) True
36. 36.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
37. 37.📏 How many ohms (Ω) is 0.6 kΩ?
38. 38.📏 How many milliamperes (mA) is 2.61 A?
39. 39.📏 How many ohms (Ω) is 8.4 kΩ?
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure

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