Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 828 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
2. 2.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
4. 4.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) how much a part resists (d) energy used each second
5. 5.📏 How many kilowatts (kW) is 1700 W? =
6. 6.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) voltage (d) energy used each second
7. 7.True or false: power is measured in amperes (A). (a) False (b) True
8. 8.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) the push of a cell (d) power
9. 9.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
10. 10.True or false: the voltmeter measures current. (a) True (b) False
11. 11.📏 How many kilo-ohms (kΩ) is 200 Ω? =
12. 12.📏 How many milliamperes (mA) is 0.15 A?
13. 13.📏 How many milliamperes (mA) is 2.16 A?
14. 14.True or false: the ammeter measures current. (a) False (b) True
15. 15.📏 How many kilowatts (kW) is 950 W? =
16. 16.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
17. 17.📏 How many ohms (Ω) is 1.5 kΩ?
18. 18.📏 How many amperes (A) is 2460 mA? =
19. 19.📏 How many watts (W) is 1.4 kW?
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
21. 21.True or false: energy used each second is measured in volts (V). (a) True (b) False
22. 22.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) how much a part resists (d) current
23. 23.📏 How many watts (W) is 0.9 kW?
24. 24.Which of these is measured in amperes (A)? (a) current (b) voltage (c) how much a part resists (d) energy used each second
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
27. 27.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
28. 28.📏 How many amperes (A) is 1200 mA? =
29. 29.True or false: the ammeter is joined in series. (a) True (b) False
30. 30.True or false: the voltmeter measures voltage. (a) False (b) True
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
32. 32.True or false: the ammeter measures voltage. (a) False (b) True
33. 33.📏 How many watts (W) is 4.6 kW?
34. 34.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) energy used each second (d) how much a part resists
35. 35.📏 How many watts (W) is 4.4 kW?
36. 36.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
37. 37.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
39. 39.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
40. 40.📏 How many kilo-ohms (kΩ) is 9500 Ω? =

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