Answer: By all non-electrostatic forces inside the battery.
- A Mainly in moving charge through the external circuit
- B Mainly in moving charge through the internal circuit alone
- C By all non-electrostatic forces inside the battery
- D By mainly electrostatic forces between charges in the circuit
Correct answer: C. By all non-electrostatic forces inside the battery
Explanation: EMF = work done per unit charge by non-electrostatic (chemical) forces within the battery to maintain current flow.
In series, the same current flows through both resistors; in parallel, the current splits between branches and the voltage across each resistor is the same.
Concept context
Ohm's law, resistors, Kirchhoff's laws, Wheatstone bridge, and cells.