All Flashcards
What is the difference between series and parallel circuits?
Series: Components connected end-to-end, single path for current. Parallel: Components connected side-by-side, multiple paths for current.
What is the difference between an ideal and a real battery?
Ideal: No internal resistance. Real: Has internal resistance that affects terminal voltage.
What is the difference between resistance and resistivity?
Resistance (R) depends on the object's dimensions. Resistivity (ρ) is a material property.
What is the difference between Voltmeter and Ammeter?
Voltmeter: Measures voltage, connected in parallel with high internal resistance. Ammeter: Measures current, connected in series with low internal resistance.
What happens if there is a break in a circuit?
The circuit becomes an open circuit, and current stops flowing.
What is the effect of increasing the temperature on the resistivity of most materials?
Resistivity generally increases with temperature.
What happens to the terminal voltage of a real battery as the current drawn from it increases?
The terminal voltage decreases due to the increased voltage drop across the internal resistance.
What happens to the equivalent resistance when adding resistors in series?
The total resistance increases.
What happens to the equivalent resistance when adding resistors in parallel?
The total resistance decreases.
Label the components in a basic circuit diagram.
Battery: Long and short parallel lines; Resistor: Zig-zag line; Switch: A break in a line with a movable arm.