Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 149 · 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 flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
2. 2.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) how much a part resists (d) power
3. 3.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) resistance (d) the push of a cell
4. 4.📏 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
5. 5.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
6. 6.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) energy used each second (d) voltage
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
8. 8.True or false: power is measured in ohms (Ω). (a) True (b) False
9. 9.📏 How many ohms (Ω) is 9.3 kΩ?
10. 10.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) current (d) energy used each second
11. 11.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
12. 12.📏 How many milliamperes (mA) is 1.59 A?
13. 13.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) energy used each second (d) voltage
14. 14.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
15. 15.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
16. 16.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
17. 17.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
18. 18.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) the flow of charge (d) voltage
19. 19.True or false: resistance is measured in watts (W). (a) False (b) True
20. 20.📏 How many watts (W) is 4.7 kW?
21. 21.📏 How many kilowatts (kW) is 1400 W? =
22. 22.True or false: energy used each second is measured in volts (V). (a) True (b) False
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
25. 25.📏 How many watts (W) is 3.4 kW?
26. 26.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
27. 27.📏 How many watts (W) is 1 kW?
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
29. 29.📏 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
30. 30.True or false: the ammeter measures current. (a) False (b) True
31. 31.📏 How many watts (W) is 2.6 kW?
32. 32.True or false: the voltmeter is joined in series. (a) False (b) True
33. 33.📏 How many milliamperes (mA) is 1.9 A?
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
35. 35.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
36. 36.📏 How many ohms (Ω) is 0.9 kΩ?
37. 37.True or false: how much a part resists is measured in watts (W). (a) False (b) True
38. 38.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) power (d) the flow of charge
39. 39.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
40. 40.True or false: the push of a cell is measured in volts (V). (a) False (b) True

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