Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 703 · 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.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
3. 3.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
4. 4.Which of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) how much a part resists (d) power
5. 5.📏 How many milliamperes (mA) is 1.63 A?
6. 6.📏 How many amperes (A) is 2550 mA? =
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
8. 8.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
12. 12.True or false: the voltmeter measures voltage. (a) True (b) False
13. 13.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
14. 14.📏 How many kilowatts (kW) is 3950 W? =
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
16. 16.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
18. 18.Which of these is measured in amperes (A)? (a) power (b) current (c) the push of a cell (d) how much a part resists
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
20. 20.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
21. 21.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
22. 22.True or false: the push of a cell is measured in volts (V). (a) False (b) True
23. 23.True or false: the ammeter measures current. (a) False (b) True
24. 24.True or false: energy used each second is measured in watts (W). (a) False (b) True
25. 25.📏 How many amperes (A) is 2320 mA? =
26. 26.📏 How many watts (W) is 3.6 kW?
27. 27.True or false: the voltmeter is joined across a part. (a) True (b) False
28. 28.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) how much a part resists
29. 29.True or false: power is measured in ohms (Ω). (a) True (b) False
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
31. 31.Which of these is measured in ohms (Ω)? (a) power (b) current (c) energy used each second (d) how much a part resists
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
34. 34.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) resistance (d) how much a part resists
35. 35.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
36. 36.📏 How many watts (W) is 0.4 kW?
37. 37.📏 How many milliamperes (mA) is 2.77 A?
38. 38.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) how much a part resists (d) resistance
39. 39.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
40. 40.📏 How many milliamperes (mA) is 2.8 A?

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