Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 945 · 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.📏 How many kilo-ohms (kΩ) is 1200 Ω? =
2. 2.True or false: power is measured in volts (V). (a) True (b) False
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
5. 5.📏 How many kilo-ohms (kΩ) is 9700 Ω? =
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.True or false: the ammeter is joined in series. (a) False (b) True
9. 9.True or false: the voltmeter measures voltage. (a) False (b) True
10. 10.True or false: voltage is measured in watts (W). (a) True (b) False
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
12. 12.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the push of a cell (d) how much a part resists
13. 13.📏 How many ohms (Ω) is 5.6 kΩ?
14. 14.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
15. 15.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
16. 16.📏 How many ohms (Ω) is 0.7 kΩ?
17. 17.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
19. 19.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) resistance (d) energy used each second
20. 20.📏 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
21. 21.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) power (d) the push of a cell
22. 22.📏 How many amperes (A) is 1140 mA? =
23. 23.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
24. 24.True or false: current is measured in ohms (Ω). (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 1.06 A?
26. 26.📏 How many watts (W) is 1.4 kW?
27. 27.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) current (d) resistance
28. 28.📏 How many amperes (A) is 1270 mA? =
29. 29.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
30. 30.📏 How many ohms (Ω) is 8 kΩ?
31. 31.📏 How many milliamperes (mA) is 0.05 A?
32. 32.📏 How many kilowatts (kW) is 750 W? =
33. 33.📏 How many kilowatts (kW) is 200 W? =
34. 34.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) resistance (d) the flow of charge
35. 35.📏 How many watts (W) is 4.7 kW?
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
38. 38.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
39. 39.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
40. 40.True or false: the ammeter measures current. (a) True (b) False

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