Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 841 · 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) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.True or false: voltage is measured in amperes (A). (a) True (b) False
3. 3.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.True or false: resistance is measured in volts (V). (a) True (b) False
8. 8.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
10. 10.True or false: the voltmeter measures current. (a) True (b) False
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
14. 14.📏 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
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
16. 16.True or false: the push of a cell is measured in watts (W). (a) True (b) False
17. 17.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) power (d) the push of a cell
18. 18.True or false: the ammeter measures voltage. (a) True (b) False
19. 19.📏 How many watts (W) is 4.2 kW?
20. 20.📏 How many watts (W) is 1.6 kW?
21. 21.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) power (d) voltage
22. 22.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) voltage (d) resistance
23. 23.📏 How many kilo-ohms (kΩ) is 1900 Ω? =
24. 24.True or false: the ammeter is joined in series. (a) True (b) False
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) energy used each second (d) resistance
26. 26.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
27. 27.📏 How many ohms (Ω) is 8.7 kΩ?
28. 28.True or false: the voltmeter is joined across a part. (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 9600 Ω? =
30. 30.📏 How many kilowatts (kW) is 3200 W? =
31. 31.📏 How many ohms (Ω) is 9.7 kΩ?
32. 32.📏 How many watts (W) is 0.8 kW?
33. 33.📏 How many milliamperes (mA) is 0.23 A?
34. 34.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) power (d) resistance
35. 35.True or false: power is measured in volts (V). (a) True (b) False
36. 36.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
37. 37.📏 How many milliamperes (mA) is 0.27 A?
38. 38.True or false: resistance is measured in ohms (Ω). (a) False (b) True
39. 39.📏 How many ohms (Ω) is 5.3 kΩ?
40. 40.📏 How many milliamperes (mA) is 2.28 A?

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