Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 38 · 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 ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) current (d) resistance
2. 2.📏 How many watts (W) is 0.2 kW?
3. 3.📏 How many kilowatts (kW) is 4700 W? =
4. 4.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) power (d) resistance
5. 5.True or false: the voltmeter is joined in series. (a) False (b) True
6. 6.True or false: resistance is measured in ohms (Ω). (a) True (b) False
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
8. 8.True or false: the ammeter is joined in series. (a) False (b) True
9. 9.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) how much a part resists (d) current
10. 10.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
11. 11.📏 How many kilowatts (kW) is 3250 W? =
12. 12.True or false: the voltmeter measures current. (a) True (b) False
13. 13.📏 How many amperes (A) is 2280 mA? =
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.True or false: how much a part resists is measured in volts (V). (a) True (b) False
16. 16.True or false: current is measured in amperes (A). (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
20. 20.True or false: power is measured in ohms (Ω). (a) False (b) True
21. 21.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
25. 25.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.📏 How many amperes (A) is 1570 mA? =
28. 28.Which of these is measured in watts (W)? (a) resistance (b) current (c) energy used each second (d) the flow of charge
29. 29.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
30. 30.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
31. 31.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
32. 32.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) power
33. 33.Which of these is measured in watts (W)? (a) resistance (b) current (c) how much a part resists (d) power
34. 34.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
35. 35.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
36. 36.📏 How many amperes (A) is 760 mA? =
37. 37.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
38. 38.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
39. 39.📏 How many ohms (Ω) is 2.7 kΩ?
40. 40.True or false: voltage is measured in volts (V). (a) False (b) True

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