Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 207 · 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 how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
2. 2.📏 How many ohms (Ω) is 7.9 kΩ?
3. 3.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) power (d) energy used each second
4. 4.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) current
5. 5.True or false: power is measured in amperes (A). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
7. 7.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
8. 8.📏 How many watts (W) is 3.2 kW?
9. 9.Which of these is measured in volts (V)? (a) power (b) resistance (c) current (d) the push of a cell
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
11. 11.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
12. 12.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
14. 14.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) current (d) voltage
15. 15.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
17. 17.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
18. 18.True or false: the voltmeter measures voltage. (a) False (b) True
19. 19.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
20. 20.📏 How many watts (W) is 2.9 kW?
21. 21.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) voltage (d) the push of a cell
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.📏 How many milliamperes (mA) is 1.84 A?
24. 24.True or false: power is measured in volts (V). (a) True (b) False
25. 25.📏 How many amperes (A) is 1850 mA? =
26. 26.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
27. 27.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) voltage (d) resistance
28. 28.📏 How many kilowatts (kW) is 150 W? =
29. 29.📏 How many kilowatts (kW) is 3850 W? =
30. 30.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
31. 31.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
32. 32.📏 How many watts (W) is 0.9 kW?
33. 33.True or false: energy used each second is measured in volts (V). (a) False (b) True
34. 34.📏 How many kilowatts (kW) is 2450 W? =
35. 35.📏 How many ohms (Ω) is 8.4 kΩ?
36. 36.📏 How many amperes (A) is 190 mA? =
37. 37.📏 How many watts (W) is 3.5 kW?
38. 38.📏 How many amperes (A) is 640 mA? =
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
40. 40.📏 How many kilo-ohms (kΩ) is 7500 Ω? =

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