Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 755 · 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 voltmeter measures voltage. (a) False (b) True
2. 2.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
3. 3.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
4. 4.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) current (d) power
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
6. 6.True or false: the push of a cell is measured in volts (V). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
9. 9.📏 How many amperes (A) is 490 mA? =
10. 10.True or false: current is measured in volts (V). (a) True (b) False
11. 11.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) energy used each second (d) resistance
12. 12.📏 How many kilowatts (kW) is 800 W? =
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.📏 How many watts (W) is 2.5 kW?
15. 15.📏 How many watts (W) is 1.5 kW?
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
17. 17.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) power (d) current
18. 18.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
19. 19.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
20. 20.True or false: the ammeter is joined across a part. (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
22. 22.📏 How many watts (W) is 4.2 kW?
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
24. 24.True or false: the ammeter measures voltage. (a) False (b) True
25. 25.📏 How many amperes (A) is 1130 mA? =
26. 26.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
27. 27.📏 How many kilo-ohms (kΩ) is 300 Ω? =
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
30. 30.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) the push of a cell (d) resistance
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
32. 32.📏 How many watts (W) is 1.2 kW?
33. 33.True or false: the voltmeter measures current. (a) False (b) True
34. 34.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
36. 36.📏 How many ohms (Ω) is 8.3 kΩ?
37. 37.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) voltage (d) resistance
38. 38.📏 How many milliamperes (mA) is 0.48 A?
39. 39.📏 How many amperes (A) is 2420 mA? =
40. 40.📏 How many kilowatts (kW) is 2700 W? =

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