Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 464 · 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 water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
2. 2.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
3. 3.📏 How many milliamperes (mA) is 1.71 A?
4. 4.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
5. 5.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) energy used each second (d) the flow of charge
6. 6.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
7. 7.True or false: voltage is measured in amperes (A). (a) True (b) False
8. 8.True or false: energy used each second is measured in watts (W). (a) False (b) True
9. 9.📏 How many kilowatts (kW) is 3650 W? =
10. 10.True or false: the voltmeter measures current. (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 1.01 A?
12. 12.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) the flow of charge (d) energy used each second
13. 13.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.True or false: the ammeter measures voltage. (a) False (b) True
16. 16.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) the flow of charge (d) power
17. 17.📏 How many kilo-ohms (kΩ) is 3100 Ω? =
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
19. 19.True or false: resistance is measured in ohms (Ω). (a) False (b) True
20. 20.True or false: the ammeter measures current. (a) False (b) True
21. 21.📏 How many kilowatts (kW) is 2650 W? =
22. 22.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
24. 24.📏 How many kilowatts (kW) is 4200 W? =
25. 25.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
26. 26.Which of these is measured in volts (V)? (a) current (b) resistance (c) voltage (d) how much a part resists
27. 27.📏 How many ohms (Ω) is 2.7 kΩ?
28. 28.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
29. 29.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
30. 30.True or false: the flow of charge is measured in volts (V). (a) True (b) False
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
33. 33.📏 How many ohms (Ω) is 9.5 kΩ?
34. 34.True or false: energy used each second is measured in amperes (A). (a) True (b) False
35. 35.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
36. 36.True or false: current is measured in volts (V). (a) True (b) False
37. 37.📏 How many milliamperes (mA) is 2.56 A?
38. 38.True or false: the voltmeter measures voltage. (a) False (b) True
39. 39.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
40. 40.True or false: power is measured in watts (W). (a) False (b) True

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