Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 403 · 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 810 mA? =
2. 2.📏 How many milliamperes (mA) is 0.09 A?
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
4. 4.📏 How many milliamperes (mA) is 2.73 A?
5. 5.📏 How many ohms (Ω) is 3.6 kΩ?
6. 6.True or false: the push of a cell is measured in volts (V). (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
9. 9.Which of these is measured in volts (V)? (a) resistance (b) power (c) voltage (d) how much a part resists
10. 10.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) current (d) voltage
11. 11.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) energy used each second (d) resistance
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
13. 13.📏 How many ohms (Ω) is 6.4 kΩ?
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) voltage (d) energy used each second
16. 16.📏 How many milliamperes (mA) is 0.56 A?
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
19. 19.📏 How many amperes (A) is 370 mA? =
20. 20.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
21. 21.True or false: energy used each second is measured in amperes (A). (a) True (b) False
22. 22.True or false: the ammeter measures voltage. (a) False (b) True
23. 23.📏 How many watts (W) is 1.6 kW?
24. 24.📏 How many watts (W) is 1 kW?
25. 25.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
27. 27.📏 How many kilo-ohms (kΩ) is 700 Ω? =
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
29. 29.📏 How many watts (W) is 1.5 kW?
30. 30.📏 How many amperes (A) is 1110 mA? =
31. 31.True or false: the push of a cell is measured in watts (W). (a) False (b) True
32. 32.📏 How many milliamperes (mA) is 1.8 A?
33. 33.📏 How many kilowatts (kW) is 800 W? =
34. 34.True or false: how much a part resists is measured in watts (W). (a) True (b) False
35. 35.Which of these is measured in amperes (A)? (a) power (b) resistance (c) the flow of charge (d) voltage
36. 36.True or false: the voltmeter is joined across a part. (a) True (b) False
37. 37.True or false: power is measured in volts (V). (a) True (b) False
38. 38.True or false: how much a part resists is measured in volts (V). (a) False (b) True
39. 39.📏 How many ohms (Ω) is 0.7 kΩ?
40. 40.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)

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