Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 248 · 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 the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
2. 2.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
3. 3.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) power (d) voltage
4. 4.True or false: the ammeter measures current. (a) False (b) True
5. 5.📏 How many watts (W) is 3.3 kW?
6. 6.True or false: energy used each second is measured in volts (V). (a) True (b) False
7. 7.Which of these is measured in amperes (A)? (a) current (b) power (c) the push of a cell (d) resistance
8. 8.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) current (d) the flow of charge
9. 9.📏 How many kilowatts (kW) is 2450 W? =
10. 10.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) current
11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
12. 12.Which of these is measured in watts (W)? (a) voltage (b) current (c) energy used each second (d) the push of a cell
13. 13.True or false: the push of a cell is measured in volts (V). (a) False (b) True
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
16. 16.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) power (d) the flow of charge
17. 17.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
18. 18.📏 How many ohms (Ω) is 4.6 kΩ?
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) power (d) the push of a cell
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
24. 24.📏 How many ohms (Ω) is 5.1 kΩ?
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
26. 26.True or false: power is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many ohms (Ω) is 1.7 kΩ?
28. 28.True or false: the voltmeter is joined in series. (a) True (b) False
29. 29.True or false: voltage is measured in amperes (A). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
31. 31.True or false: the ammeter measures voltage. (a) False (b) True
32. 32.📏 How many amperes (A) is 590 mA? =
33. 33.True or false: resistance is measured in volts (V). (a) True (b) False
34. 34.True or false: voltage is measured in watts (W). (a) False (b) True
35. 35.True or false: power is measured in watts (W). (a) False (b) True
36. 36.📏 How many ohms (Ω) is 0.7 kΩ?
37. 37.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
39. 39.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
40. 40.True or false: energy used each second is measured in watts (W). (a) False (b) True

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