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प्रश्न
State a relation between electrical power, resistance and potential difference in an electrical circuit.
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उत्तर
In an electrical circuit, electrical power
P = V2/R
where V = potential difference and R = resistance.
संबंधित प्रश्न
How does the presence of impurities in a metal affect its resistance?
Write down an expression for the resistance of a metallic wire in terms of the resistivity.
How does the resistance of a wire change when:
its length is tripled?
What possible values of resultant resistance one can get by combining two resistances, one of value 2 ohm and the other 6 ohm?
Calculate the combined resistance in each case:
Calculate the equivalent resistance of the following combination of resistor r1, r2, r3, and r4
Three resistors of 6.0 Ω, 2.0 Ω and 4.0 Ω are joined to an ammeter A and a cell of emf 6.0 V as shown in the following figure. Calculate :
- the effective resistance of the circuit.
- the reading of ammeter.
State expression for Resistance connected in series.
What is the maximum resistance which can be made using five resistors each of `1/5` W?
