Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 134 · 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 7 kΩ?
2. 2.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
3. 3.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
5. 5.Which of these is measured in volts (V)? (a) the push of a cell (b) the flow of charge (c) power (d) energy used each second
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.True or false: the ammeter measures current. (a) False (b) True
8. 8.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) the flow of charge (d) the push of a cell
9. 9.📏 How many milliamperes (mA) is 1.73 A?
10. 10.Which of these is measured in amperes (A)? (a) current (b) power (c) resistance (d) how much a part resists
11. 11.📏 How many ohms (Ω) is 5.9 kΩ?
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
14. 14.True or false: the ammeter is joined across a part. (a) True (b) False
15. 15.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) the flow of charge
16. 16.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
17. 17.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
18. 18.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
19. 19.True or false: the push of a cell is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) current (d) voltage
21. 21.True or false: the ammeter is joined in series. (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
24. 24.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many amperes (A) is 20 mA? =
27. 27.📏 How many amperes (A) is 2710 mA? =
28. 28.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
29. 29.📏 How many amperes (A) is 790 mA? =
30. 30.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
31. 31.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
33. 33.True or false: power is measured in watts (W). (a) False (b) True
34. 34.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
35. 35.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
36. 36.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) current (d) resistance
37. 37.📏 How many kilowatts (kW) is 1100 W? =
38. 38.📏 How many amperes (A) is 640 mA? =
39. 39.📏 How many kilowatts (kW) is 3250 W? =
40. 40.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)

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