Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 999 · 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 voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.True or false: current is measured in amperes (A). (a) False (b) True
3. 3.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) voltage
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.True or false: the ammeter measures voltage. (a) True (b) False
6. 6.📏 How many kilowatts (kW) is 2450 W? =
7. 7.True or false: the voltmeter is joined in series. (a) False (b) True
8. 8.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
9. 9.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
10. 10.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) energy used each second (d) how much a part resists
11. 11.True or false: voltage is measured in ohms (Ω). (a) False (b) True
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.📏 How many ohms (Ω) is 0.6 kΩ?
14. 14.True or false: the voltmeter measures voltage. (a) False (b) True
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
16. 16.📏 How many ohms (Ω) is 3 kΩ?
17. 17.📏 How many kilo-ohms (kΩ) is 400 Ω? =
18. 18.📏 How many amperes (A) is 340 mA? =
19. 19.📏 How many kilowatts (kW) is 3900 W? =
20. 20.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
21. 21.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) power (d) the flow of charge
22. 22.Which of these is measured in amperes (A)? (a) current (b) voltage (c) power (d) the push of a cell
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
26. 26.📏 How many kilowatts (kW) is 4900 W? =
27. 27.📏 How many kilowatts (kW) is 2000 W? =
28. 28.📏 How many milliamperes (mA) is 0.98 A?
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
31. 31.📏 How many watts (W) is 5 kW?
32. 32.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
33. 33.📏 How many milliamperes (mA) is 0.76 A?
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
35. 35.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
36. 36.📏 How many amperes (A) is 20 mA? =
37. 37.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
38. 38.📏 How many milliamperes (mA) is 2.6 A?
39. 39.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
40. 40.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False

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