Change In Resistance

Five identical resistors each of resistance 1Omega are initially arranged as shown in the figure by dark lines. If two similar resistances are added as shown by the dashed lines, then change in resistance in final and initial arrangement is

Five identical resistors each of resistance 1Omega are initially arranged as shown in the figure by clear lines. If two resistances are added as shown by the dashed lines then change in resistance in final and initial arrangement is

Five identical resistors each of resistance 1Omega are initially arranged as shown in the figure by clear lines. If two resistances are added as shown by the dashed lines then change in resistance in final and initial arrangement is

Choose correct alternative. The quantity (frac(R_t - R_0)(t)) represents A. rate of change of resistance with time B. rate of change of resistance with temperature C. rate of change of resistance with pressure D. rate of change of resistance with volume

The mouth piece of the telephone works on the principle of change of resistance due to :

Choose correct alternative. A rheostat is used A. to bring on a known change of resistance in the circuit to alter the current B. to continuously change the resistance in any arbitrary manner and there by alter the current C. to make and break the circuit at any instant D. neither to alter the resistance nor the current

How does the concept of change of resistance of a wire when strained (stretched) has been utilized in technology?

In a series LCR resonance circuit, if we change the resistance only, from a lower to higher value :

If the supply voltage drop from 220 V to 200 V , what would be percentage reduction in heat produced by a 220V - 1000W heater ? Neglect the change of resistance. If the change of resistance is taken into consideration would the reduction of heat produced be smaller or larger than the previously calculated value ? Explain.

Wheatstone Bridge||Stretching of Wire||Reshaping and Resistance Change