spectrum ( ur known emission lines in the visible cm and D n in the first order
ID: 2265902 • Letter: S
Question
spectrum ( ur known emission lines in the visible cm and D n in the first order with a (C) 710 mm (D) 579 nmm (B) 411m 6963 m Meter Sädk Optical Bench Grating Light Eye mage it ln the simple circuit shown below, there are two multimeters: X and Y. What do (A) X measures voltage and Y measures current (C) X measures currest and Y measures voltage (B) X measures current and Y measures resistance (D) X mcasures voltage and Y measures resistance 19,In Lab # 33 (RC Time Constant), when the power supply was switched off the voltage across the capacitor-as time elapsed. (A) decreased (B) increased (C) remained cosstant (D) fuctuated between high and low 20. A brass key has a the key to make it electrically neutral? of +9.6 x 10C. Approximately, how many electrons must be added to (A) 3000 (B) 6000 (C) 1800 (D) 960 (E) 2100Explanation / Answer
18. Option C
Because ammeter should be connected in series to measure the current so x measure current
Voltmeter should be connected across the circuit to measure voltage so Y measure voltage
19.Option A
Because before switch is on capacitor is initally charged now when the switch is of capacitor gets discharged so voltage across capacitor decreases from equation q =cv when charge decreases voltage decreases
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