Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 988 · 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.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
2. 2.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) energy used each second (d) resistance
3. 3.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
4. 4.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
5. 5.📏 How many watts (W) is 2.1 kW?
6. 6.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) current (d) voltage
7. 7.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
8. 8.📏 How many kilowatts (kW) is 900 W? =
9. 9.True or false: current is measured in volts (V). (a) True (b) False
10. 10.True or false: the ammeter is joined in series. (a) False (b) True
11. 11.True or false: power is measured in watts (W). (a) False (b) True
12. 12.📏 How many kilowatts (kW) is 3250 W? =
13. 13.📏 How many milliamperes (mA) is 1.09 A?
14. 14.📏 How many ohms (Ω) is 3.2 kΩ?
15. 15.True or false: the ammeter measures current. (a) True (b) False
16. 16.True or false: resistance is measured in ohms (Ω). (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 1.65 A?
18. 18.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
19. 19.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
21. 21.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) how much a part resists (d) energy used each second
22. 22.📏 How many amperes (A) is 2240 mA? =
23. 23.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
25. 25.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) current (d) power
26. 26.Which of these is measured in volts (V)? (a) power (b) energy used each second (c) voltage (d) current
27. 27.True or false: the voltmeter measures current. (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
29. 29.📏 How many watts (W) is 0.7 kW?
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
31. 31.📏 How many amperes (A) is 1040 mA? =
32. 32.📏 How many milliamperes (mA) is 0.16 A?
33. 33.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) the flow of charge (d) the push of a cell
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
35. 35.📏 How many amperes (A) is 2150 mA? =
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
38. 38.True or false: the push of a cell is measured in volts (V). (a) True (b) False
39. 39.📏 How many ohms (Ω) is 3.9 kΩ?
40. 40.📏 How many milliamperes (mA) is 1.03 A?

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