Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 643 · 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 of these is measured in ohms (Ω)? (a) resistance (b) current (c) energy used each second (d) voltage
2. 2.True or false: resistance is measured in ohms (Ω). (a) False (b) True
3. 3.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
4. 4.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
5. 5.True or false: current is measured in ohms (Ω). (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 0.17 A?
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
9. 9.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) voltage (d) energy used each second
10. 10.True or false: energy used each second is measured in watts (W). (a) True (b) False
11. 11.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
12. 12.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) the push of a cell (d) how much a part resists
13. 13.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
15. 15.📏 How many kilowatts (kW) is 2200 W? =
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
17. 17.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
18. 18.📏 How many watts (W) is 2.2 kW?
19. 19.📏 How many kilo-ohms (kΩ) is 700 Ω? =
20. 20.📏 How many milliamperes (mA) is 2.68 A?
21. 21.Which of these is measured in watts (W)? (a) current (b) power (c) how much a part resists (d) resistance
22. 22.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) voltage (d) resistance
23. 23.📏 How many ohms (Ω) is 0.4 kΩ?
24. 24.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
26. 26.📏 How many kilowatts (kW) is 3400 W? =
27. 27.📏 How many milliamperes (mA) is 1.35 A?
28. 28.True or false: how much a part resists is measured in volts (V). (a) False (b) True
29. 29.📏 How many amperes (A) is 400 mA? =
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
31. 31.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
32. 32.📏 How many kilowatts (kW) is 4950 W? =
33. 33.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
34. 34.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
35. 35.📏 How many ohms (Ω) is 6.6 kΩ?
36. 36.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 1450 W? =
38. 38.True or false: the ammeter measures voltage. (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 1300 W? =
40. 40.📏 How many milliamperes (mA) is 0.36 A?

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