Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 457 · 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 amperes (A) is 1560 mA? =
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.True or false: energy used each second is measured in watts (W). (a) False (b) True
4. 4.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) energy used each second (d) voltage
5. 5.True or false: the voltmeter is joined in series. (a) False (b) True
6. 6.📏 How many kilo-ohms (kΩ) is 5400 Ω? =
7. 7.📏 How many kilowatts (kW) is 3200 W? =
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) resistance (d) the push of a cell
10. 10.📏 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
11. 11.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) current (d) the push of a cell
12. 12.📏 How many milliamperes (mA) is 2.68 A?
13. 13.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) how much a part resists (d) power
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
16. 16.📏 How many amperes (A) is 1570 mA? =
17. 17.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) the flow of charge (d) energy used each second
18. 18.📏 How many ohms (Ω) is 4 kΩ?
19. 19.True or false: resistance is measured in ohms (Ω). (a) True (b) False
20. 20.📏 How many kilowatts (kW) is 3800 W? =
21. 21.📏 How many amperes (A) is 1970 mA? =
22. 22.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
23. 23.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
24. 24.📏 How many milliamperes (mA) is 1.34 A?
25. 25.True or false: current is measured in watts (W). (a) True (b) False
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
27. 27.📏 How many ohms (Ω) is 2.1 kΩ?
28. 28.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
29. 29.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) a narrow pipe (d) the flow of water
30. 30.📏 How many amperes (A) is 1210 mA? =
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
32. 32.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
33. 33.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) energy used each second (d) resistance
34. 34.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
35. 35.📏 How many kilowatts (kW) is 4050 W? =
36. 36.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
37. 37.True or false: power is measured in volts (V). (a) True (b) False
38. 38.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
39. 39.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
40. 40.📏 How many milliamperes (mA) is 2.96 A?

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