Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 87 · 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.📏 How many amperes (A) is 330 mA? =
2. 2.True or false: the voltmeter measures voltage. (a) False (b) True
3. 3.True or false: current is measured in amperes (A). (a) False (b) True
4. 4.True or false: current is measured in volts (V). (a) False (b) True
5. 5.📏 How many milliamperes (mA) is 0.36 A?
6. 6.True or false: energy used each second is measured in watts (W). (a) False (b) True
7. 7.True or false: power is measured in amperes (A). (a) False (b) True
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
10. 10.📏 How many kilowatts (kW) is 850 W? =
11. 11.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
12. 12.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
13. 13.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) current (d) energy used each second
14. 14.📏 How many watts (W) is 4.2 kW?
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 How many amperes (A) is 2000 mA? =
17. 17.📏 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
18. 18.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
23. 23.True or false: current is measured in watts (W). (a) True (b) False
24. 24.📏 How many milliamperes (mA) is 0.64 A?
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
26. 26.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
27. 27.📏 How many watts (W) is 3.5 kW?
28. 28.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) energy used each second (d) power
29. 29.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
30. 30.True or false: the push of a cell is measured in volts (V). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 2.38 A?
32. 32.True or false: the ammeter is joined in series. (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
34. 34.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
35. 35.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
36. 36.True or false: the push of a cell is measured in watts (W). (a) True (b) False
37. 37.True or false: power is measured in watts (W). (a) False (b) True
38. 38.True or false: how much a part resists is measured in volts (V). (a) True (b) False
39. 39.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) power (d) how much a part resists
40. 40.True or false: the push of a cell is measured in amperes (A). (a) True (b) False

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