Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 184 · 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 power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
2. 2.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) the flow of charge (d) power
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
4. 4.📏 How many kilowatts (kW) is 3650 W? =
5. 5.True or false: the ammeter measures current. (a) False (b) True
6. 6.📏 How many kilowatts (kW) is 1550 W? =
7. 7.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
9. 9.📏 How many ohms (Ω) is 3.2 kΩ?
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
12. 12.📏 How many milliamperes (mA) is 0.02 A?
13. 13.True or false: the flow of charge is measured in volts (V). (a) True (b) False
14. 14.📏 How many kilo-ohms (kΩ) is 400 Ω? =
15. 15.📏 How many milliamperes (mA) is 1.21 A?
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
18. 18.📏 How many watts (W) is 1.2 kW?
19. 19.📏 How many milliamperes (mA) is 2.87 A?
20. 20.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
23. 23.Which of these is measured in ohms (Ω)? (a) energy used each second (b) current (c) the flow of charge (d) how much a part resists
24. 24.📏 How many amperes (A) is 2910 mA? =
25. 25.True or false: how much a part resists is measured in volts (V). (a) True (b) False
26. 26.True or false: energy used each second is measured in watts (W). (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.📏 How many kilowatts (kW) is 3000 W? =
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
30. 30.📏 How many ohms (Ω) is 3.9 kΩ?
31. 31.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) energy used each second (d) resistance
32. 32.True or false: voltage is measured in volts (V). (a) False (b) True
33. 33.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
34. 34.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
35. 35.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) current (d) power
36. 36.📏 How many kilowatts (kW) is 950 W? =
37. 37.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
38. 38.True or false: the voltmeter is joined in series. (a) False (b) True
39. 39.📏 How many kilowatts (kW) is 4100 W? =
40. 40.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure

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