Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 556 · 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 power? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.📏 How many kilowatts (kW) is 1350 W? =
3. 3.True or false: the voltmeter measures current. (a) False (b) True
4. 4.True or false: how much a part resists is measured in volts (V). (a) False (b) True
5. 5.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
6. 6.Which of these is measured in amperes (A)? (a) voltage (b) current (c) the push of a cell (d) how much a part resists
7. 7.📏 How many kilowatts (kW) is 2350 W? =
8. 8.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
9. 9.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
10. 10.📏 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
11. 11.Which of these is measured in volts (V)? (a) voltage (b) power (c) energy used each second (d) how much a part resists
12. 12.True or false: voltage is measured in ohms (Ω). (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.📏 How many milliamperes (mA) is 1.04 A?
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
16. 16.True or false: the ammeter measures current. (a) False (b) True
17. 17.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) power
18. 18.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) power (d) current
19. 19.📏 How many kilowatts (kW) is 150 W? =
20. 20.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
21. 21.True or false: the ammeter is joined across a part. (a) True (b) False
22. 22.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
23. 23.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
24. 24.True or false: the flow of charge is measured in watts (W). (a) True (b) False
25. 25.📏 How many ohms (Ω) is 4 kΩ?
26. 26.📏 How many ohms (Ω) is 9.9 kΩ?
27. 27.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) energy used each second (d) the push of a cell
28. 28.True or false: voltage is measured in volts (V). (a) False (b) True
29. 29.📏 How many ohms (Ω) is 1.3 kΩ?
30. 30.True or false: the push of a cell is measured in watts (W). (a) True (b) False
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
32. 32.True or false: the ammeter measures voltage. (a) True (b) False
33. 33.📏 How many ohms (Ω) is 7.7 kΩ?
34. 34.📏 How many kilowatts (kW) is 250 W? =
35. 35.True or false: the voltmeter is joined across a part. (a) False (b) True
36. 36.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
37. 37.True or false: the push of a cell is measured in volts (V). (a) True (b) False
38. 38.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) resistance (d) the flow of charge
39. 39.📏 How many amperes (A) is 2290 mA? =
40. 40.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)

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