Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 281 · 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 ohms (Ω) is 6.5 kΩ?
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
3. 3.True or false: the push of a cell is measured in volts (V). (a) False (b) True
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
5. 5.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
6. 6.True or false: the ammeter is joined in series. (a) True (b) False
7. 7.True or false: power is measured in watts (W). (a) False (b) True
8. 8.Which of these is measured in watts (W)? (a) power (b) resistance (c) voltage (d) how much a part resists
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
11. 11.📏 How many amperes (A) is 240 mA? =
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
15. 15.True or false: the voltmeter is joined in series. (a) False (b) True
16. 16.True or false: the ammeter is joined across a part. (a) False (b) True
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.📏 How many ohms (Ω) is 1.3 kΩ?
19. 19.True or false: power is measured in amperes (A). (a) True (b) False
20. 20.📏 How many milliamperes (mA) is 0.77 A?
21. 21.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
23. 23.📏 How many amperes (A) is 630 mA? =
24. 24.True or false: the ammeter measures current. (a) True (b) False
25. 25.Which of these is measured in watts (W)? (a) energy used each second (b) voltage (c) how much a part resists (d) current
26. 26.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) how much a part resists (d) voltage
27. 27.True or false: power is measured in volts (V). (a) False (b) True
28. 28.📏 How many milliamperes (mA) is 0.16 A?
29. 29.📏 How many milliamperes (mA) is 1.65 A?
30. 30.📏 How many watts (W) is 3.3 kW?
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
33. 33.True or false: voltage is measured in watts (W). (a) False (b) True
34. 34.📏 How many amperes (A) is 1990 mA? =
35. 35.True or false: current is measured in watts (W). (a) False (b) True
36. 36.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) the push of a cell (d) voltage
37. 37.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
38. 38.📏 How many watts (W) is 1.2 kW?
39. 39.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
40. 40.True or false: energy used each second is measured in watts (W). (a) True (b) False

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