Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 616 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
4. 4.📏 How many ohms (Ω) is 0.4 kΩ?
5. 5.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
6. 6.📏 How many kilowatts (kW) is 3850 W? =
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) power (d) resistance
8. 8.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
9. 9.📏 How many ohms (Ω) is 8.3 kΩ?
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
11. 11.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) current (d) power
12. 12.📏 How many amperes (A) is 1040 mA? =
13. 13.📏 How many milliamperes (mA) is 2.47 A?
14. 14.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
15. 15.📏 How many kilowatts (kW) is 4100 W? =
16. 16.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
17. 17.📏 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
18. 18.📏 How many kilowatts (kW) is 4000 W? =
19. 19.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) power (d) current
20. 20.📏 How many kilo-ohms (kΩ) is 4700 Ω? =
21. 21.📏 How many watts (W) is 0.7 kW?
22. 22.📏 How many milliamperes (mA) is 2.26 A?
23. 23.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
24. 24.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
25. 25.Which of these is measured in volts (V)? (a) power (b) voltage (c) the flow of charge (d) current
26. 26.True or false: the voltmeter measures voltage. (a) False (b) True
27. 27.📏 How many milliamperes (mA) is 0.7 A?
28. 28.True or false: energy used each second is measured in amperes (A). (a) True (b) False
29. 29.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) how much a part resists
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
31. 31.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
32. 32.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) resistance (d) power
33. 33.Which of these is measured in volts (V)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) the flow of charge
34. 34.True or false: the ammeter measures current. (a) False (b) True
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
36. 36.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
37. 37.True or false: resistance is measured in ohms (Ω). (a) False (b) True
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
39. 39.True or false: the push of a cell is measured in volts (V). (a) False (b) True
40. 40.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter

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