CONCEPTUAL QUESTION ON WHY THE ANSWER IS WHAT IT IS AND HOW THE ANSWER WAS GOTTE

Question

CONCEPTUAL QUESTION ON WHY THE ANSWER IS WHAT IT IS AND HOW THE ANSWER WAS GOTTEN
THE CORRECT ANSWER TO BOTH THESE QUESTIONS HAVE BEEN BOLDED. Thanks!

7) A loop containing N identical resistors includes a battery with an emf of 10 V. If we start the loop at the battery's negative terminal, proceed through the battery and then through the resistors back to the negative terminal of the battery, the potential difference across each resistor and the number of resistors could be

A- 3 resistors, -7 V
B- 5 resistors, 2 V
C- 9 resistors, 1V
D- 2 resistors, -5V



8. At the moment the switch closes on this freshly connected RC circuit



A- Q = 0, I0 = /R

B- Q = C, I0 = 0

C- Q = C, I0 = /R

D- Q = 0, I0 = 0

Explanation / Answer

V = 10 Volts

The question states that A loop containing N identical resistors, so it implied only a simgle loop and all the resistors are connected in series.

In series, the same current flows through all the resistors and the sum of drop across all resistors should equal to the battery emf.

When N resistors are in series, Rew = N R

for only , N = 5 and V = 2 ; the consition is valid.

8)The moment switch in RC circuit ic closed, the capacitor is uncharged, so Q = 0

and current in the circuit is . I0 = e/R.

when the charging beings, the charge increases and the current decreases exponentially.

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