To determine how the total voltage across the resistors compares to the voltage of the battery after changing it from 9 V to 15 V, you would follow these steps:
- Change the voltage of the battery: You've done this by setting it to 15 V.
- Measure the voltage across the resistors: Using the voltmeter, measure the voltage across each resistor and round each measurement to the nearest whole number.
- Sum the voltages: Add the rounded measurements of the voltages across each resistor to get the total voltage across the resistors.
- Comparison: Compare the total voltage from step 3 to the battery voltage of 15 V.
Typically, in a circuit with resistors connected in series, the total voltage across the resistors should equal the voltage of the battery, if there are no additional factors affecting it (like internal resistance of the battery or other circuit components).
Final answer: Equal to
Under normal circumstances, if the resistors are in series and there's no additional circuit complexity, the total voltage across the resistors should be equal to the battery voltage. However, ensure to check your voltmeter readings to ensure accuracy.