Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 3 · 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 watts (W)? (a) how much a part resists (b) current (c) voltage (d) power
2. 2.📏 Which unit measures power? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
3. 3.📏 How many milliamperes (mA) is 0.66 A?
4. 4.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) the flow of charge (d) resistance
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
7. 7.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
10. 10.True or false: resistance is measured in ohms (Ω). (a) True (b) False
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) how much a part resists (d) the push of a cell
13. 13.True or false: the ammeter is joined across a part. (a) True (b) False
14. 14.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) the flow of charge (d) the push of a cell
15. 15.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) power (d) resistance
16. 16.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
17. 17.📏 How many ohms (Ω) is 3.6 kΩ?
18. 18.📏 How many kilowatts (kW) is 2950 W? =
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
20. 20.📏 How many watts (W) is 2.9 kW?
21. 21.True or false: the ammeter measures current. (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
23. 23.📏 How many kilowatts (kW) is 1250 W? =
24. 24.True or false: the ammeter measures voltage. (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
26. 26.📏 How many amperes (A) is 1820 mA? =
27. 27.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) current (d) energy used each second
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
29. 29.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) the flow of charge (d) current
30. 30.True or false: voltage is measured in ohms (Ω). (a) False (b) True
31. 31.📏 How many kilowatts (kW) is 4100 W? =
32. 32.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
33. 33.📏 How many kilo-ohms (kΩ) is 5300 Ω? =
34. 34.📏 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
35. 35.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) current (d) resistance
36. 36.📏 How many kilowatts (kW) is 4250 W? =
37. 37.📏 How many amperes (A) is 950 mA? =
38. 38.True or false: the voltmeter is joined across a part. (a) False (b) True
39. 39.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
40. 40.📏 How many kilowatts (kW) is 1650 W? =

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