Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 164 · 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) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
2. 2.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) current (d) how much a part resists
3. 3.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) the push of a cell (d) voltage
5. 5.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) current (d) the push of a cell
6. 6.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
7. 7.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
10. 10.True or false: voltage is measured in volts (V). (a) False (b) True
11. 11.True or false: power is measured in volts (V). (a) False (b) True
12. 12.📏 How many watts (W) is 3.7 kW?
13. 13.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
14. 14.📏 How many watts (W) is 0.3 kW?
15. 15.True or false: energy used each second is measured in watts (W). (a) True (b) False
16. 16.📏 How many amperes (A) is 10 mA? =
17. 17.📏 How many amperes (A) is 230 mA? =
18. 18.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
19. 19.True or false: power is measured in watts (W). (a) True (b) False
20. 20.📏 How many ohms (Ω) is 4.2 kΩ?
21. 21.True or false: resistance is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
24. 24.📏 How many watts (W) is 0.9 kW?
25. 25.📏 How many watts (W) is 2 kW?
26. 26.📏 How many kilowatts (kW) is 1000 W? =
27. 27.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) how much a part resists (d) energy used each second
28. 28.📏 How many watts (W) is 3.1 kW?
29. 29.True or false: current is measured in amperes (A). (a) True (b) False
30. 30.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
31. 31.📏 How many kilowatts (kW) is 3200 W? =
32. 32.True or false: the voltmeter measures current. (a) True (b) False
33. 33.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
34. 34.True or false: voltage is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many ohms (Ω) is 9.8 kΩ?
36. 36.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
37. 37.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
38. 38.📏 How many amperes (A) is 2380 mA? =
39. 39.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) the flow of charge (d) power
40. 40.📏 How many kilowatts (kW) is 50 W? =

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