Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 119 · 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 kilowatts (kW) is 3000 W? =
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
3. 3.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
4. 4.📏 How many kilowatts (kW) is 4800 W? =
5. 5.📏 How many amperes (A) is 670 mA? =
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
8. 8.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
10. 10.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
11. 11.📏 How many milliamperes (mA) is 0.42 A?
12. 12.True or false: the voltmeter measures current. (a) True (b) False
13. 13.📏 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
14. 14.📏 How many ohms (Ω) is 1 kΩ?
15. 15.📏 How many amperes (A) is 2880 mA? =
16. 16.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
17. 17.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) current
18. 18.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 2.31 A?
20. 20.True or false: the voltmeter measures voltage. (a) True (b) False
21. 21.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
22. 22.📏 How many watts (W) is 4.2 kW?
23. 23.Which of these is measured in watts (W)? (a) current (b) voltage (c) energy used each second (d) resistance
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
25. 25.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) power (d) voltage
26. 26.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
27. 27.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
28. 28.True or false: current is measured in volts (V). (a) False (b) True
29. 29.True or false: current is measured in ohms (Ω). (a) True (b) False
30. 30.True or false: energy used each second is measured in volts (V). (a) True (b) False
31. 31.📏 How many ohms (Ω) is 7.5 kΩ?
32. 32.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) how much a part resists
33. 33.True or false: power is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
35. 35.Which of these is measured in amperes (A)? (a) power (b) resistance (c) current (d) voltage
36. 36.📏 How many kilowatts (kW) is 3150 W? =
37. 37.📏 How many milliamperes (mA) is 1.19 A?
38. 38.📏 How many ohms (Ω) is 1.2 kΩ?
39. 39.True or false: voltage is measured in watts (W). (a) False (b) True
40. 40.True or false: voltage is measured in volts (V). (a) False (b) True

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