Physics
Write the expressions for the equivalent resistance R of three resistors R1, R2 and R3 joined in (a) parallel, (b) series.
Related Questions
Which of the following combinations have the same equivalent resistance between X and Y?
For parallel combination of resistances, which of the statements are correct ?
- On I-V graph, the slope of line is more.
- The potential difference across each resistance is same.
- The current in a resistor is inversely proportional to the resistance.
- All of the above
State how are the two resistors joined with a battery in each of the following cases when —
(a) same current flows in each resistor,
(b) potential difference is same across each resistor,
(c) equivalent resistance is less than either of the two resistances,
(d) equivalent resistance is more than either of the two resistances.
State two differences between the e.m.f. and terminal voltage of a cell.