Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 245 · 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, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
2. 2.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
4. 4.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) the flow of charge (d) power
5. 5.True or false: energy used each second is measured in watts (W). (a) True (b) False
6. 6.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) current (d) resistance
7. 7.True or false: the ammeter is joined across a part. (a) False (b) True
8. 8.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.True or false: current is measured in amperes (A). (a) False (b) True
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
13. 13.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
14. 14.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
15. 15.True or false: the voltmeter is joined across a part. (a) False (b) True
16. 16.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
17. 17.📏 How many watts (W) is 1.3 kW?
18. 18.📏 How many milliamperes (mA) is 1.16 A?
19. 19.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
20. 20.📏 How many kilowatts (kW) is 850 W? =
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
22. 22.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) power (d) the flow of charge
23. 23.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
24. 24.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
25. 25.📏 How many watts (W) is 1.7 kW?
26. 26.📏 How many milliamperes (mA) is 2.24 A?
27. 27.📏 How many kilowatts (kW) is 3900 W? =
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
29. 29.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
30. 30.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) how much a part resists (d) voltage
31. 31.📏 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
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
34. 34.True or false: the voltmeter measures voltage. (a) True (b) False
35. 35.📏 How many watts (W) is 0.7 kW?
36. 36.True or false: the push of a cell is measured in volts (V). (a) True (b) False
37. 37.True or false: voltage is measured in ohms (Ω). (a) True (b) False
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
39. 39.📏 How many kilowatts (kW) is 1700 W? =
40. 40.True or false: voltage is measured in volts (V). (a) False (b) True

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