Answer: increases.
- A increases
- B decreases
- C remains unchanged
- D becomes zero
Correct answer: A. increases
Explanation: In metals, increased lattice vibrations at higher temperature raise the resistance.
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.