Two resistors are connected in series across a battery. What is the power delive

Question

Two resistors are connected in series across a battery. What is the power delivered to each resistor is which of the following? the same not necessarily the same (b) Two resistors are connected in parallel across a battery. What is the power delivered to each resistor is which of the following? the same not necessarily the same SerCPg 18.P.002. Four 12.0 Ohm resistors are connected in series with a 9.0 V battery, Find the following. (a) the equivalent resistance of the circuit Ohm (b) the current in each resistor A (c) Repeat for the case in which all four resistors are connected in parallel across the battery. equivalent resistance Ohm current in each resistor A

Explanation / Answer

a) not necessarily the same bcoz P=i^2R     i same but depend on R
b) not necessarily the same bcoz P=v^/R      V same but depend on R

a) Equivalent resistance = 12+12+12+12 = 48 ohm
b) Current = 9/48 = 0.1875 A
c) Equivalent resistance be 'r'
1/r=(1/12)+(1/12)+(1/12)+(1/12)
=> r = 12/4
r = 3 ohms
d) Current through each resistor = 9/12 = 0.75 A

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