If one doubles the emfs in a circuit and doubles the resistances in the circuit at the same time,what happens to the currents through the resistors? Assume there are only emfs and resistors in the circuit.
A)They stay the same.
B)They double.
C)They quadruple.
D)They halve.

Question

Quizplus · Accepted Answer

According to Ohm's law, the current through a resistor is directly proportional to the voltage across it and inversely proportional to its resistance. Since both the emfs and the resistances are doubled, the voltage across each resistor remains the same, and the resistance cancels out in the calculation of current. Therefore, the current through each resistor stays the same.

If One Doubles the Emfs in a Circuit and Doubles