Question

(7%) Problem 4: You have a circuit of three resistors in series connected to a battery. D A You add a fourth resistor, also in series, to the combination. As a result: Grade Summary Power delivered from the battery to combination increases. It is impossible to give the answer without knowing the actual resistances and voltage of the battery Power delivered from the battery to combination is unchanged. Power delivered from the battery to combination decreases. 0% 100% Submissions Attempts remaining: 3 (33% per attempt) detailed view Submit Hint give up! Hints: for a 0 % deduction. Hints remaining: Feedback: 0%-deduction per feedback. What will happen to the current and voltage across the combination?

Answer 1

here,

when a fourth resistor is connected in series

the equivalent resistance of the circuit will increases

the power delivered , P = V^2 /Req

the potential difference remains the same

and

the power delivered from the battery is inversaly proportional to the resistance

as the equivalent resistance increases

the power delivered from the battery will decreases