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Answer:
1. The instrument that measures electrical quantities is called a **multimeter**. It can measure voltage (volts), current (amperes), and resistance (ohms).
2. Given that ½ meter is equivalent to 50 centimeters, we can find how many meters 150 centimeters represent:
- 1 meter = 100 centimeters
- So, ½ meter = 50 centimeters
- Therefore, 150 centimeters = 1½ meters.
3. There are **39.37 inches** in 1 meter. This conversion factor is commonly used to switch between metric and imperial units.
4. There are **91.44 centimeters** in 1 yard. This is the basic conversion factor for length measurements between yards and centimeters.
5. If 1 dry cell is rated at **1.5 volts**, the total voltage of **3 dry cells connected in parallel** remains the same. When connected in parallel, the voltage across each cell remains unchanged. Therefore, the total voltage is still **1.5 volts**.