Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 730 · 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: the ammeter measures voltage. (a) True (b) False
2. 2.Which of these is measured in watts (W)? (a) resistance (b) current (c) energy used each second (d) voltage
3. 3.📏 How many milliamperes (mA) is 1.41 A?
4. 4.📏 How many milliamperes (mA) is 2.33 A?
5. 5.📏 How many amperes (A) is 2480 mA? =
6. 6.True or false: energy used each second is measured in watts (W). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.True or false: the flow of charge is measured in watts (W). (a) True (b) False
9. 9.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
11. 11.📏 How many ohms (Ω) is 1.6 kΩ?
12. 12.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
13. 13.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
14. 14.📏 How many milliamperes (mA) is 1.95 A?
15. 15.True or false: current is measured in amperes (A). (a) False (b) True
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many ohms (Ω) is 6.2 kΩ?
18. 18.📏 How many amperes (A) is 320 mA? =
19. 19.📏 How many amperes (A) is 150 mA? =
20. 20.📏 How many milliamperes (mA) is 1.21 A?
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
22. 22.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) voltage (d) resistance
23. 23.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
24. 24.📏 How many milliamperes (mA) is 0.79 A?
25. 25.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) how much a part resists
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 100 (d) 60
27. 27.True or false: the push of a cell is measured in volts (V). (a) False (b) True
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
29. 29.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) energy used each second
30. 30.📏 How many ohms (Ω) is 5 kΩ?
31. 31.📏 How many kilowatts (kW) is 2400 W? =
32. 32.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) power
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
34. 34.Which of these is measured in amperes (A)? (a) power (b) resistance (c) voltage (d) current
35. 35.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.True or false: current is measured in volts (V). (a) False (b) True
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
38. 38.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
39. 39.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
40. 40.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)

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