Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 620 · 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 is joined in series. (a) False (b) True
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
4. 4.📏 How many ohms (Ω) is 7.7 kΩ?
5. 5.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 How many milliamperes (mA) is 0.44 A?
7. 7.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
8. 8.📏 How many amperes (A) is 1540 mA? =
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) voltage (d) the flow of charge
11. 11.True or false: resistance is measured in amperes (A). (a) False (b) True
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
14. 14.True or false: energy used each second is measured in amperes (A). (a) True (b) False
15. 15.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) power (c) the flow of charge (d) energy used each second
16. 16.📏 How many watts (W) is 1.2 kW?
17. 17.Which of these is measured in volts (V)? (a) current (b) power (c) the push of a cell (d) how much a part resists
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
19. 19.True or false: voltage is measured in amperes (A). (a) True (b) False
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
21. 21.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) current (d) the flow of charge
22. 22.📏 How many ohms (Ω) is 6.5 kΩ?
23. 23.📏 How many milliamperes (mA) is 0.73 A?
24. 24.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
25. 25.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) current (d) resistance
26. 26.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.📏 How many kilowatts (kW) is 4100 W? =
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
29. 29.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
30. 30.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
31. 31.True or false: the flow of charge is measured in watts (W). (a) False (b) True
32. 32.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
33. 33.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
34. 34.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
35. 35.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) energy used each second (d) voltage
36. 36.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) voltage (d) power
37. 37.True or false: voltage is measured in watts (W). (a) False (b) True
38. 38.📏 How many kilowatts (kW) is 800 W? =
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.True or false: the ammeter is joined across a part. (a) False (b) True

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